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Finding the Fourth Proportional to 14,776.83, 20,394.18 and 8,487.99

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Solution

The fourth proportional to 14,776.83, 20,394.18 and 8,487.99 is: 11,714.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,776.83 : 20,394.18 = 8,487.99 : x
  2. Step 2: Convert to fraction form
    14,776.83/20,394.18 = 8,487.99/x
  3. Step 3: Cross multiply
    14,776.83x = 20,394.18 × 8,487.99
  4. Step 4: Simplify right side
    14,776.83x = 173,105,595.90
  5. Step 5: Solve for x
    x = 173,105,595.90/14,776.83
  6. Step 6: Final answer
    x = 11,714.66

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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.