Home / 12,135.72-16,748.46-7,424.76

Finding the Fourth Proportional to 12,135.72, 16,748.46 and 7,424.76

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Solution

The fourth proportional to 12,135.72, 16,748.46 and 7,424.76 is: 10,246.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.72 : 16,748.46 = 7,424.76 : x
  2. Step 2: Convert to fraction form
    12,135.72/16,748.46 = 7,424.76/x
  3. Step 3: Cross multiply
    12,135.72x = 16,748.46 × 7,424.76
  4. Step 4: Simplify right side
    12,135.72x = 124,353,295.87
  5. Step 5: Solve for x
    x = 124,353,295.87/12,135.72
  6. Step 6: Final answer
    x = 10,246.88

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Double scale
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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.