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Finding the Fourth Proportional to 28,167, 38,870.52 and 15,593.64

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Solution

The fourth proportional to 28,167, 38,870.52 and 15,593.64 is: 21,519.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167 : 38,870.52 = 15,593.64 : x
  2. Step 2: Convert to fraction form
    28,167/38,870.52 = 15,593.64/x
  3. Step 3: Cross multiply
    28,167x = 38,870.52 × 15,593.64
  4. Step 4: Simplify right side
    28,167x = 606,132,895.49
  5. Step 5: Solve for x
    x = 606,132,895.49/28,167
  6. Step 6: Final answer
    x = 21,519.26

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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.