Home / 11,512.54-15,887.15-6,476.79

Finding the Fourth Proportional to 11,512.54, 15,887.15 and 6,476.79

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Solution

The fourth proportional to 11,512.54, 15,887.15 and 6,476.79 is: 8,937.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,512.54 : 15,887.15 = 6,476.79 : x
  2. Step 2: Convert to fraction form
    11,512.54/15,887.15 = 6,476.79/x
  3. Step 3: Cross multiply
    11,512.54x = 15,887.15 × 6,476.79
  4. Step 4: Simplify right side
    11,512.54x = 102,897,822.16
  5. Step 5: Solve for x
    x = 102,897,822.16/11,512.54
  6. Step 6: Final answer
    x = 8,937.89

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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.