Home / 11,513.55-15,887.79-6,476.78

Finding the Fourth Proportional to 11,513.55, 15,887.79 and 6,476.78

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Solution

The fourth proportional to 11,513.55, 15,887.79 and 6,476.78 is: 8,937.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,513.55 : 15,887.79 = 6,476.78 : x
  2. Step 2: Convert to fraction form
    11,513.55/15,887.79 = 6,476.78/x
  3. Step 3: Cross multiply
    11,513.55x = 15,887.79 × 6,476.78
  4. Step 4: Simplify right side
    11,513.55x = 102,901,641.08
  5. Step 5: Solve for x
    x = 102,901,641.08/11,513.55
  6. Step 6: Final answer
    x = 8,937.44

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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.