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Finding the Fourth Proportional to 42,167.84, 63,207.69 and 19,954.76

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Solution

The fourth proportional to 42,167.84, 63,207.69 and 19,954.76 is: 29,911.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,167.84 : 63,207.69 = 19,954.76 : x
  2. Step 2: Convert to fraction form
    42,167.84/63,207.69 = 19,954.76/x
  3. Step 3: Cross multiply
    42,167.84x = 63,207.69 × 19,954.76
  4. Step 4: Simplify right side
    42,167.84x = 1,261,294,284.10
  5. Step 5: Solve for x
    x = 1,261,294,284.10/42,167.84
  6. Step 6: Final answer
    x = 29,911.29

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1.5x scale

Why These Related Problems?

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