Home / 18,390.74-25,372.38-11,218.18

Finding the Fourth Proportional to 18,390.74, 25,372.38 and 11,218.18

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Solution

The fourth proportional to 18,390.74, 25,372.38 and 11,218.18 is: 15,476.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.74 : 25,372.38 = 11,218.18 : x
  2. Step 2: Convert to fraction form
    18,390.74/25,372.38 = 11,218.18/x
  3. Step 3: Cross multiply
    18,390.74x = 25,372.38 × 11,218.18
  4. Step 4: Simplify right side
    18,390.74x = 284,631,925.87
  5. Step 5: Solve for x
    x = 284,631,925.87/18,390.74
  6. Step 6: Final answer
    x = 15,476.92

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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.