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Finding the Fourth Proportional to 13,657.59, 20,479.98 and 9,499.65

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Solution

The fourth proportional to 13,657.59, 20,479.98 and 9,499.65 is: 14,245.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.59 : 20,479.98 = 9,499.65 : x
  2. Step 2: Convert to fraction form
    13,657.59/20,479.98 = 9,499.65/x
  3. Step 3: Cross multiply
    13,657.59x = 20,479.98 × 9,499.65
  4. Step 4: Simplify right side
    13,657.59x = 194,552,642.01
  5. Step 5: Solve for x
    x = 194,552,642.01/13,657.59
  6. Step 6: Final answer
    x = 14,245.02

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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.