Home / 12,279.60-16,937.10-7,565.40

Finding the Fourth Proportional to 12,279.60, 16,937.10 and 7,565.40

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Solution

The fourth proportional to 12,279.60, 16,937.10 and 7,565.40 is: 10,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.60 : 16,937.10 = 7,565.40 : x
  2. Step 2: Convert to fraction form
    12,279.60/16,937.10 = 7,565.40/x
  3. Step 3: Cross multiply
    12,279.60x = 16,937.10 × 7,565.40
  4. Step 4: Simplify right side
    12,279.60x = 128,135,936.34
  5. Step 5: Solve for x
    x = 128,135,936.34/12,279.60
  6. Step 6: Final answer
    x = 10,434.86

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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.