Home / 20,569.25-28,358.10-15,443.06

Finding the Fourth Proportional to 20,569.25, 28,358.10 and 15,443.06

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Solution

The fourth proportional to 20,569.25, 28,358.10 and 15,443.06 is: 21,290.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.25 : 28,358.10 = 15,443.06 : x
  2. Step 2: Convert to fraction form
    20,569.25/28,358.10 = 15,443.06/x
  3. Step 3: Cross multiply
    20,569.25x = 28,358.10 × 15,443.06
  4. Step 4: Simplify right side
    20,569.25x = 437,935,839.79
  5. Step 5: Solve for x
    x = 437,935,839.79/20,569.25
  6. Step 6: Final answer
    x = 21,290.80

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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.