Home / 15,340.73-21,170.79-8,626.32

Finding the Fourth Proportional to 15,340.73, 21,170.79 and 8,626.32

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Solution

The fourth proportional to 15,340.73, 21,170.79 and 8,626.32 is: 11,904.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,340.73 : 21,170.79 = 8,626.32 : x
  2. Step 2: Convert to fraction form
    15,340.73/21,170.79 = 8,626.32/x
  3. Step 3: Cross multiply
    15,340.73x = 21,170.79 × 8,626.32
  4. Step 4: Simplify right side
    15,340.73x = 182,626,009.19
  5. Step 5: Solve for x
    x = 182,626,009.19/15,340.73
  6. Step 6: Final answer
    x = 11,904.65

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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.