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Finding the Fourth Proportional to 19,572.59, 29,358.77 and 4,781.59

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Solution

The fourth proportional to 19,572.59, 29,358.77 and 4,781.59 is: 7,172.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,572.59 : 29,358.77 = 4,781.59 : x
  2. Step 2: Convert to fraction form
    19,572.59/29,358.77 = 4,781.59/x
  3. Step 3: Cross multiply
    19,572.59x = 29,358.77 × 4,781.59
  4. Step 4: Simplify right side
    19,572.59x = 140,381,430.34
  5. Step 5: Solve for x
    x = 140,381,430.34/19,572.59
  6. Step 6: Final answer
    x = 7,172.35

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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.