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Finding the Fourth Proportional to 14,575.56, 20,116.98 and 8,287.56

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Solution

The fourth proportional to 14,575.56, 20,116.98 and 8,287.56 is: 11,438.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,575.56 : 20,116.98 = 8,287.56 : x
  2. Step 2: Convert to fraction form
    14,575.56/20,116.98 = 8,287.56/x
  3. Step 3: Cross multiply
    14,575.56x = 20,116.98 × 8,287.56
  4. Step 4: Simplify right side
    14,575.56x = 166,720,678.77
  5. Step 5: Solve for x
    x = 166,720,678.77/14,575.56
  6. Step 6: Final answer
    x = 11,438.37

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Half scale
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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.