Home / 15,113.25-20,856.11-8,398.73

Finding the Fourth Proportional to 15,113.25, 20,856.11 and 8,398.73

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Solution

The fourth proportional to 15,113.25, 20,856.11 and 8,398.73 is: 11,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113.25 : 20,856.11 = 8,398.73 : x
  2. Step 2: Convert to fraction form
    15,113.25/20,856.11 = 8,398.73/x
  3. Step 3: Cross multiply
    15,113.25x = 20,856.11 × 8,398.73
  4. Step 4: Simplify right side
    15,113.25x = 175,164,846.89
  5. Step 5: Solve for x
    x = 175,164,846.89/15,113.25
  6. Step 6: Final answer
    x = 11,590.15

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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.