Home / 18,588.72-25,641.72-11,132.40

Finding the Fourth Proportional to 18,588.72, 25,641.72 and 11,132.40

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Solution

The fourth proportional to 18,588.72, 25,641.72 and 11,132.40 is: 15,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588.72 : 25,641.72 = 11,132.40 : x
  2. Step 2: Convert to fraction form
    18,588.72/25,641.72 = 11,132.40/x
  3. Step 3: Cross multiply
    18,588.72x = 25,641.72 × 11,132.40
  4. Step 4: Simplify right side
    18,588.72x = 285,453,883.73
  5. Step 5: Solve for x
    x = 285,453,883.73/18,588.72
  6. Step 6: Final answer
    x = 15,356.30

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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.