Home / 10,513.19-15,769.49-3,117.79

Finding the Fourth Proportional to 10,513.19, 15,769.49 and 3,117.79

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Solution

The fourth proportional to 10,513.19, 15,769.49 and 3,117.79 is: 4,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.19 : 15,769.49 = 3,117.79 : x
  2. Step 2: Convert to fraction form
    10,513.19/15,769.49 = 3,117.79/x
  3. Step 3: Cross multiply
    10,513.19x = 15,769.49 × 3,117.79
  4. Step 4: Simplify right side
    10,513.19x = 49,165,962.35
  5. Step 5: Solve for x
    x = 49,165,962.35/10,513.19
  6. Step 6: Final answer
    x = 4,676.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.