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Finding the Fourth Proportional to 39,294.40, 58,955.68 and 19,571.20

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Solution

The fourth proportional to 39,294.40, 58,955.68 and 19,571.20 is: 29,363.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,294.40 : 58,955.68 = 19,571.20 : x
  2. Step 2: Convert to fraction form
    39,294.40/58,955.68 = 19,571.20/x
  3. Step 3: Cross multiply
    39,294.40x = 58,955.68 × 19,571.20
  4. Step 4: Simplify right side
    39,294.40x = 1,153,833,404.42
  5. Step 5: Solve for x
    x = 1,153,833,404.42/39,294.40
  6. Step 6: Final answer
    x = 29,363.81

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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.