Home / 10,908.12-15,061.68-8,386.32

Finding the Fourth Proportional to 10,908.12, 15,061.68 and 8,386.32

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Solution

The fourth proportional to 10,908.12, 15,061.68 and 8,386.32 is: 11,579.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.12 : 15,061.68 = 8,386.32 : x
  2. Step 2: Convert to fraction form
    10,908.12/15,061.68 = 8,386.32/x
  3. Step 3: Cross multiply
    10,908.12x = 15,061.68 × 8,386.32
  4. Step 4: Simplify right side
    10,908.12x = 126,312,068.22
  5. Step 5: Solve for x
    x = 126,312,068.22/10,908.12
  6. Step 6: Final answer
    x = 11,579.64

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Half scale
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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.