Home / 11,123.68-15,351.24-6,408.40

Finding the Fourth Proportional to 11,123.68, 15,351.24 and 6,408.40

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Solution

The fourth proportional to 11,123.68, 15,351.24 and 6,408.40 is: 8,843.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.68 : 15,351.24 = 6,408.40 : x
  2. Step 2: Convert to fraction form
    11,123.68/15,351.24 = 6,408.40/x
  3. Step 3: Cross multiply
    11,123.68x = 15,351.24 × 6,408.40
  4. Step 4: Simplify right side
    11,123.68x = 98,376,886.42
  5. Step 5: Solve for x
    x = 98,376,886.42/11,123.68
  6. Step 6: Final answer
    x = 8,843.92

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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.