Home / 11,499.54-15,869.10-6,394.71

Finding the Fourth Proportional to 11,499.54, 15,869.10 and 6,394.71

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Solution

The fourth proportional to 11,499.54, 15,869.10 and 6,394.71 is: 8,824.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,499.54 : 15,869.10 = 6,394.71 : x
  2. Step 2: Convert to fraction form
    11,499.54/15,869.10 = 6,394.71/x
  3. Step 3: Cross multiply
    11,499.54x = 15,869.10 × 6,394.71
  4. Step 4: Simplify right side
    11,499.54x = 101,478,292.46
  5. Step 5: Solve for x
    x = 101,478,292.46/11,499.54
  6. Step 6: Final answer
    x = 8,824.55

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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.