Home / 13,411.26-20,117.43-6,387.66

Finding the Fourth Proportional to 13,411.26, 20,117.43 and 6,387.66

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Solution

The fourth proportional to 13,411.26, 20,117.43 and 6,387.66 is: 9,581.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.26 : 20,117.43 = 6,387.66 : x
  2. Step 2: Convert to fraction form
    13,411.26/20,117.43 = 6,387.66/x
  3. Step 3: Cross multiply
    13,411.26x = 20,117.43 × 6,387.66
  4. Step 4: Simplify right side
    13,411.26x = 128,503,302.91
  5. Step 5: Solve for x
    x = 128,503,302.91/13,411.26
  6. Step 6: Final answer
    x = 9,581.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.