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Finding the Fourth Proportional to 28,748,298.52, 39,672,446.54 and 15,695,557.01

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Solution

The fourth proportional to 28,748,298.52, 39,672,446.54 and 15,695,557.01 is: 21,659,756.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,748,298.52 : 39,672,446.54 = 15,695,557.01 : x
  2. Step 2: Convert to fraction form
    28,748,298.52/39,672,446.54 = 15,695,557.01/x
  3. Step 3: Cross multiply
    28,748,298.52x = 39,672,446.54 × 15,695,557.01
  4. Step 4: Simplify right side
    28,748,298.52x = 622,681,146,354,982
  5. Step 5: Solve for x
    x = 622,681,146,354,982/28,748,298.52
  6. Step 6: Final answer
    x = 21,659,756.52

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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.