Home / 11,182.08-15,431.70-6,402.78

Finding the Fourth Proportional to 11,182.08, 15,431.70 and 6,402.78

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Solution

The fourth proportional to 11,182.08, 15,431.70 and 6,402.78 is: 8,836.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,182.08 : 15,431.70 = 6,402.78 : x
  2. Step 2: Convert to fraction form
    11,182.08/15,431.70 = 6,402.78/x
  3. Step 3: Cross multiply
    11,182.08x = 15,431.70 × 6,402.78
  4. Step 4: Simplify right side
    11,182.08x = 98,805,780.13
  5. Step 5: Solve for x
    x = 98,805,780.13/11,182.08
  6. Step 6: Final answer
    x = 8,836.08

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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.