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Finding the Fourth Proportional to 14,663.61, 20,238.50 and 8,375.99

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Solution

The fourth proportional to 14,663.61, 20,238.50 and 8,375.99 is: 11,560.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,663.61 : 20,238.50 = 8,375.99 : x
  2. Step 2: Convert to fraction form
    14,663.61/20,238.50 = 8,375.99/x
  3. Step 3: Cross multiply
    14,663.61x = 20,238.50 × 8,375.99
  4. Step 4: Simplify right side
    14,663.61x = 169,517,393.36
  5. Step 5: Solve for x
    x = 169,517,393.36/14,663.61
  6. Step 6: Final answer
    x = 11,560.41

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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.