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Finding the Fourth Proportional to 11,699.80, 16,127.50 and 8,710.88

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Solution

The fourth proportional to 11,699.80, 16,127.50 and 8,710.88 is: 12,007.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,699.80 : 16,127.50 = 8,710.88 : x
  2. Step 2: Convert to fraction form
    11,699.80/16,127.50 = 8,710.88/x
  3. Step 3: Cross multiply
    11,699.80x = 16,127.50 × 8,710.88
  4. Step 4: Simplify right side
    11,699.80x = 140,484,717.20
  5. Step 5: Solve for x
    x = 140,484,717.20/11,699.80
  6. Step 6: Final answer
    x = 12,007.45

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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.