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Finding the Fourth Proportional to 12,927.70, 17,847 and 8,700.98

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Solution

The fourth proportional to 12,927.70, 17,847 and 8,700.98 is: 12,011.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.70 : 17,847 = 8,700.98 : x
  2. Step 2: Convert to fraction form
    12,927.70/17,847 = 8,700.98/x
  3. Step 3: Cross multiply
    12,927.70x = 17,847 × 8,700.98
  4. Step 4: Simplify right side
    12,927.70x = 155,286,390.06
  5. Step 5: Solve for x
    x = 155,286,390.06/12,927.70
  6. Step 6: Final answer
    x = 12,011.91

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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.