Home / 18,726.54-25,855.62-15,157.38

Finding the Fourth Proportional to 18,726.54, 25,855.62 and 15,157.38

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Solution

The fourth proportional to 18,726.54, 25,855.62 and 15,157.38 is: 20,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.54 : 25,855.62 = 15,157.38 : x
  2. Step 2: Convert to fraction form
    18,726.54/25,855.62 = 15,157.38/x
  3. Step 3: Cross multiply
    18,726.54x = 25,855.62 × 15,157.38
  4. Step 4: Simplify right side
    18,726.54x = 391,903,457.48
  5. Step 5: Solve for x
    x = 391,903,457.48/18,726.54
  6. Step 6: Final answer
    x = 20,927.70

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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.