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Finding the Fourth Proportional to 14,869.74, 20,520.11 and 8,155.24

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Solution

The fourth proportional to 14,869.74, 20,520.11 and 8,155.24 is: 11,254.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,869.74 : 20,520.11 = 8,155.24 : x
  2. Step 2: Convert to fraction form
    14,869.74/20,520.11 = 8,155.24/x
  3. Step 3: Cross multiply
    14,869.74x = 20,520.11 × 8,155.24
  4. Step 4: Simplify right side
    14,869.74x = 167,346,493.56
  5. Step 5: Solve for x
    x = 167,346,493.56/14,869.74
  6. Step 6: Final answer
    x = 11,254.17

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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.