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Finding the Fourth Proportional to 14,886.11, 20,542.84 and 8,921.24

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Solution

The fourth proportional to 14,886.11, 20,542.84 and 8,921.24 is: 12,311.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,886.11 : 20,542.84 = 8,921.24 : x
  2. Step 2: Convert to fraction form
    14,886.11/20,542.84 = 8,921.24/x
  3. Step 3: Cross multiply
    14,886.11x = 20,542.84 × 8,921.24
  4. Step 4: Simplify right side
    14,886.11x = 183,267,605.92
  5. Step 5: Solve for x
    x = 183,267,605.92/14,886.11
  6. Step 6: Final answer
    x = 12,311.32

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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.