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Finding the Fourth Proportional to 14,643.52, 20,211.20 and 9,337.12

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Solution

The fourth proportional to 14,643.52, 20,211.20 and 9,337.12 is: 12,887.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,643.52 : 20,211.20 = 9,337.12 : x
  2. Step 2: Convert to fraction form
    14,643.52/20,211.20 = 9,337.12/x
  3. Step 3: Cross multiply
    14,643.52x = 20,211.20 × 9,337.12
  4. Step 4: Simplify right side
    14,643.52x = 188,714,399.74
  5. Step 5: Solve for x
    x = 188,714,399.74/14,643.52
  6. Step 6: Final answer
    x = 12,887.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.