Home / 12,407,812.20-18,611,718.30-9,219,166.20

Finding the Fourth Proportional to 12,407,812.20, 18,611,718.30 and 9,219,166.20

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Solution

The fourth proportional to 12,407,812.20, 18,611,718.30 and 9,219,166.20 is: 13,828,749.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,407,812.20 : 18,611,718.30 = 9,219,166.20 : x
  2. Step 2: Convert to fraction form
    12,407,812.20/18,611,718.30 = 9,219,166.20/x
  3. Step 3: Cross multiply
    12,407,812.20x = 18,611,718.30 × 9,219,166.20
  4. Step 4: Simplify right side
    12,407,812.20x = 171,584,524,275,281.44
  5. Step 5: Solve for x
    x = 171,584,524,275,281.44/12,407,812.20
  6. Step 6: Final answer
    x = 13,828,749.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.