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Finding the Fourth Proportional to 14,393.28, 21,543.92 and 7,713.16

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Solution

The fourth proportional to 14,393.28, 21,543.92 and 7,713.16 is: 11,545.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,393.28 : 21,543.92 = 7,713.16 : x
  2. Step 2: Convert to fraction form
    14,393.28/21,543.92 = 7,713.16/x
  3. Step 3: Cross multiply
    14,393.28x = 21,543.92 × 7,713.16
  4. Step 4: Simplify right side
    14,393.28x = 166,171,701.99
  5. Step 5: Solve for x
    x = 166,171,701.99/14,393.28
  6. Step 6: Final answer
    x = 11,545.09

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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.