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Finding the Fourth Proportional to 12,937.52, 17,855.72 and 7,904.66

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Solution

The fourth proportional to 12,937.52, 17,855.72 and 7,904.66 is: 10,909.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,937.52 : 17,855.72 = 7,904.66 : x
  2. Step 2: Convert to fraction form
    12,937.52/17,855.72 = 7,904.66/x
  3. Step 3: Cross multiply
    12,937.52x = 17,855.72 × 7,904.66
  4. Step 4: Simplify right side
    12,937.52x = 141,143,266.85
  5. Step 5: Solve for x
    x = 141,143,266.85/12,937.52
  6. Step 6: Final answer
    x = 10,909.61

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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.