Home / 15,286.66-21,095.51-8,572.28

Finding the Fourth Proportional to 15,286.66, 21,095.51 and 8,572.28

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Solution

The fourth proportional to 15,286.66, 21,095.51 and 8,572.28 is: 11,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.66 : 21,095.51 = 8,572.28 : x
  2. Step 2: Convert to fraction form
    15,286.66/21,095.51 = 8,572.28/x
  3. Step 3: Cross multiply
    15,286.66x = 21,095.51 × 8,572.28
  4. Step 4: Simplify right side
    15,286.66x = 180,836,618.46
  5. Step 5: Solve for x
    x = 180,836,618.46/15,286.66
  6. Step 6: Final answer
    x = 11,829.70

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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.