Home / 18,203.28-25,057.35-15,693.71

Finding the Fourth Proportional to 18,203.28, 25,057.35 and 15,693.71

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Solution

The fourth proportional to 18,203.28, 25,057.35 and 15,693.71 is: 21,602.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.28 : 25,057.35 = 15,693.71 : x
  2. Step 2: Convert to fraction form
    18,203.28/25,057.35 = 15,693.71/x
  3. Step 3: Cross multiply
    18,203.28x = 25,057.35 × 15,693.71
  4. Step 4: Simplify right side
    18,203.28x = 393,242,658.98
  5. Step 5: Solve for x
    x = 393,242,658.98/18,203.28
  6. Step 6: Final answer
    x = 21,602.85

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Half scale
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Double scale
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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.