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Finding the Fourth Proportional to 42,615.96, 63,931.11 and 13,026.88

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Solution

The fourth proportional to 42,615.96, 63,931.11 and 13,026.88 is: 19,542.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,615.96 : 63,931.11 = 13,026.88 : x
  2. Step 2: Convert to fraction form
    42,615.96/63,931.11 = 13,026.88/x
  3. Step 3: Cross multiply
    42,615.96x = 63,931.11 × 13,026.88
  4. Step 4: Simplify right side
    42,615.96x = 832,822,569.69
  5. Step 5: Solve for x
    x = 832,822,569.69/42,615.96
  6. Step 6: Final answer
    x = 19,542.51

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.