Home / 20,591.40-28,428.36-13,044.18

Finding the Fourth Proportional to 20,591.40, 28,428.36 and 13,044.18

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Solution

The fourth proportional to 20,591.40, 28,428.36 and 13,044.18 is: 18,008.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.40 : 28,428.36 = 13,044.18 : x
  2. Step 2: Convert to fraction form
    20,591.40/28,428.36 = 13,044.18/x
  3. Step 3: Cross multiply
    20,591.40x = 28,428.36 × 13,044.18
  4. Step 4: Simplify right side
    20,591.40x = 370,824,644.94
  5. Step 5: Solve for x
    x = 370,824,644.94/20,591.40
  6. Step 6: Final answer
    x = 18,008.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.