Home / 12,129.17-16,739.12-8,770.91

Finding the Fourth Proportional to 12,129.17, 16,739.12 and 8,770.91

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Solution

The fourth proportional to 12,129.17, 16,739.12 and 8,770.91 is: 12,104.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.17 : 16,739.12 = 8,770.91 : x
  2. Step 2: Convert to fraction form
    12,129.17/16,739.12 = 8,770.91/x
  3. Step 3: Cross multiply
    12,129.17x = 16,739.12 × 8,770.91
  4. Step 4: Simplify right side
    12,129.17x = 146,817,253.23
  5. Step 5: Solve for x
    x = 146,817,253.23/12,129.17
  6. Step 6: Final answer
    x = 12,104.48

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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.