Home / 20,669.04-28,532-13,963.76

Finding the Fourth Proportional to 20,669.04, 28,532 and 13,963.76

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Solution

The fourth proportional to 20,669.04, 28,532 and 13,963.76 is: 19,275.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.04 : 28,532 = 13,963.76 : x
  2. Step 2: Convert to fraction form
    20,669.04/28,532 = 13,963.76/x
  3. Step 3: Cross multiply
    20,669.04x = 28,532 × 13,963.76
  4. Step 4: Simplify right side
    20,669.04x = 398,414,000.32
  5. Step 5: Solve for x
    x = 398,414,000.32/20,669.04
  6. Step 6: Final answer
    x = 19,275.88

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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.