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Finding the Fourth Proportional to 12,279.48, 16,947.71 and 7,244.93

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Solution

The fourth proportional to 12,279.48, 16,947.71 and 7,244.93 is: 9,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.48 : 16,947.71 = 7,244.93 : x
  2. Step 2: Convert to fraction form
    12,279.48/16,947.71 = 7,244.93/x
  3. Step 3: Cross multiply
    12,279.48x = 16,947.71 × 7,244.93
  4. Step 4: Simplify right side
    12,279.48x = 122,784,972.61
  5. Step 5: Solve for x
    x = 122,784,972.61/12,279.48
  6. Step 6: Final answer
    x = 9,999.20

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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.