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Finding the Fourth Proportional to 14,965.33, 20,652.29 and 8,251.21

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Solution

The fourth proportional to 14,965.33, 20,652.29 and 8,251.21 is: 11,386.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,965.33 : 20,652.29 = 8,251.21 : x
  2. Step 2: Convert to fraction form
    14,965.33/20,652.29 = 8,251.21/x
  3. Step 3: Cross multiply
    14,965.33x = 20,652.29 × 8,251.21
  4. Step 4: Simplify right side
    14,965.33x = 170,406,381.77
  5. Step 5: Solve for x
    x = 170,406,381.77/14,965.33
  6. Step 6: Final answer
    x = 11,386.74

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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.