Home / 30,220.90-45,331.31-10,499.46

Finding the Fourth Proportional to 30,220.90, 45,331.31 and 10,499.46

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Solution

The fourth proportional to 30,220.90, 45,331.31 and 10,499.46 is: 15,749.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.90 : 45,331.31 = 10,499.46 : x
  2. Step 2: Convert to fraction form
    30,220.90/45,331.31 = 10,499.46/x
  3. Step 3: Cross multiply
    30,220.90x = 45,331.31 × 10,499.46
  4. Step 4: Simplify right side
    30,220.90x = 475,954,132.35
  5. Step 5: Solve for x
    x = 475,954,132.35/30,220.90
  6. Step 6: Final answer
    x = 15,749.17

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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.