Home / 12,250.32-16,905.62-9,178.74

Finding the Fourth Proportional to 12,250.32, 16,905.62 and 9,178.74

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Solution

The fourth proportional to 12,250.32, 16,905.62 and 9,178.74 is: 12,666.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,250.32 : 16,905.62 = 9,178.74 : x
  2. Step 2: Convert to fraction form
    12,250.32/16,905.62 = 9,178.74/x
  3. Step 3: Cross multiply
    12,250.32x = 16,905.62 × 9,178.74
  4. Step 4: Simplify right side
    12,250.32x = 155,172,290.52
  5. Step 5: Solve for x
    x = 155,172,290.52/12,250.32
  6. Step 6: Final answer
    x = 12,666.79

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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.