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Finding the Fourth Proportional to 14,861.67, 20,509.97 and 12,499.71

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Solution

The fourth proportional to 14,861.67, 20,509.97 and 12,499.71 is: 17,250.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,861.67 : 20,509.97 = 12,499.71 : x
  2. Step 2: Convert to fraction form
    14,861.67/20,509.97 = 12,499.71/x
  3. Step 3: Cross multiply
    14,861.67x = 20,509.97 × 12,499.71
  4. Step 4: Simplify right side
    14,861.67x = 256,368,677.11
  5. Step 5: Solve for x
    x = 256,368,677.11/14,861.67
  6. Step 6: Final answer
    x = 17,250.33

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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.