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Finding the Fourth Proportional to 28,044, 38,700.72 and 15,468.75

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Solution

The fourth proportional to 28,044, 38,700.72 and 15,468.75 is: 21,346.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,044 : 38,700.72 = 15,468.75 : x
  2. Step 2: Convert to fraction form
    28,044/38,700.72 = 15,468.75/x
  3. Step 3: Cross multiply
    28,044x = 38,700.72 × 15,468.75
  4. Step 4: Simplify right side
    28,044x = 598,651,762.50
  5. Step 5: Solve for x
    x = 598,651,762.50/28,044
  6. Step 6: Final answer
    x = 21,346.88

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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.