Home / 10,979.96-15,146.19-6,499.34

Finding the Fourth Proportional to 10,979.96, 15,146.19 and 6,499.34

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Solution

The fourth proportional to 10,979.96, 15,146.19 and 6,499.34 is: 8,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.96 : 15,146.19 = 6,499.34 : x
  2. Step 2: Convert to fraction form
    10,979.96/15,146.19 = 6,499.34/x
  3. Step 3: Cross multiply
    10,979.96x = 15,146.19 × 6,499.34
  4. Step 4: Simplify right side
    10,979.96x = 98,440,219.58
  5. Step 5: Solve for x
    x = 98,440,219.58/10,979.96
  6. Step 6: Final answer
    x = 8,965.45

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Double scale
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Similar ratio
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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.