Home / 11,113.71-15,338.25-6,397.89

Finding the Fourth Proportional to 11,113.71, 15,338.25 and 6,397.89

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Solution

The fourth proportional to 11,113.71, 15,338.25 and 6,397.89 is: 8,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,113.71 : 15,338.25 = 6,397.89 : x
  2. Step 2: Convert to fraction form
    11,113.71/15,338.25 = 6,397.89/x
  3. Step 3: Cross multiply
    11,113.71x = 15,338.25 × 6,397.89
  4. Step 4: Simplify right side
    11,113.71x = 98,132,436.29
  5. Step 5: Solve for x
    x = 98,132,436.29/11,113.71
  6. Step 6: Final answer
    x = 8,829.85

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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.