Home / 15,512.42-21,407.10-8,438.96

Finding the Fourth Proportional to 15,512.42, 21,407.10 and 8,438.96

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Solution

The fourth proportional to 15,512.42, 21,407.10 and 8,438.96 is: 11,645.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.42 : 21,407.10 = 8,438.96 : x
  2. Step 2: Convert to fraction form
    15,512.42/21,407.10 = 8,438.96/x
  3. Step 3: Cross multiply
    15,512.42x = 21,407.10 × 8,438.96
  4. Step 4: Simplify right side
    15,512.42x = 180,653,660.62
  5. Step 5: Solve for x
    x = 180,653,660.62/15,512.42
  6. Step 6: Final answer
    x = 11,645.74

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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.