Home / 21,812.20-32,718.30-13,042.60

Finding the Fourth Proportional to 21,812.20, 32,718.30 and 13,042.60

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Solution

The fourth proportional to 21,812.20, 32,718.30 and 13,042.60 is: 19,563.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,812.20 : 32,718.30 = 13,042.60 : x
  2. Step 2: Convert to fraction form
    21,812.20/32,718.30 = 13,042.60/x
  3. Step 3: Cross multiply
    21,812.20x = 32,718.30 × 13,042.60
  4. Step 4: Simplify right side
    21,812.20x = 426,731,699.58
  5. Step 5: Solve for x
    x = 426,731,699.58/21,812.20
  6. Step 6: Final answer
    x = 19,563.90

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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.