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Finding the Fourth Proportional to 13,572.68, 20,359.74 and 3,710.74

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Solution

The fourth proportional to 13,572.68, 20,359.74 and 3,710.74 is: 5,566.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.68 : 20,359.74 = 3,710.74 : x
  2. Step 2: Convert to fraction form
    13,572.68/20,359.74 = 3,710.74/x
  3. Step 3: Cross multiply
    13,572.68x = 20,359.74 × 3,710.74
  4. Step 4: Simplify right side
    13,572.68x = 75,549,701.61
  5. Step 5: Solve for x
    x = 75,549,701.61/13,572.68
  6. Step 6: Final answer
    x = 5,566.31

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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.