Home / 11,909.92-16,398.28-10,113.72

Finding the Fourth Proportional to 11,909.92, 16,398.28 and 10,113.72

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Solution

The fourth proportional to 11,909.92, 16,398.28 and 10,113.72 is: 13,925.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.92 : 16,398.28 = 10,113.72 : x
  2. Step 2: Convert to fraction form
    11,909.92/16,398.28 = 10,113.72/x
  3. Step 3: Cross multiply
    11,909.92x = 16,398.28 × 10,113.72
  4. Step 4: Simplify right side
    11,909.92x = 165,847,612.40
  5. Step 5: Solve for x
    x = 165,847,612.40/11,909.92
  6. Step 6: Final answer
    x = 13,925.17

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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.