Home / 10,939.29-15,091.05-6,460.05

Finding the Fourth Proportional to 10,939.29, 15,091.05 and 6,460.05

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Solution

The fourth proportional to 10,939.29, 15,091.05 and 6,460.05 is: 8,911.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.29 : 15,091.05 = 6,460.05 : x
  2. Step 2: Convert to fraction form
    10,939.29/15,091.05 = 6,460.05/x
  3. Step 3: Cross multiply
    10,939.29x = 15,091.05 × 6,460.05
  4. Step 4: Simplify right side
    10,939.29x = 97,488,937.55
  5. Step 5: Solve for x
    x = 97,488,937.55/10,939.29
  6. Step 6: Final answer
    x = 8,911.82

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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.