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Finding the Fourth Proportional to 18,754.50, 25,773 and 17,887.20

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Solution

The fourth proportional to 18,754.50, 25,773 and 17,887.20 is: 24,581.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.50 : 25,773 = 17,887.20 : x
  2. Step 2: Convert to fraction form
    18,754.50/25,773 = 17,887.20/x
  3. Step 3: Cross multiply
    18,754.50x = 25,773 × 17,887.20
  4. Step 4: Simplify right side
    18,754.50x = 461,006,805.60
  5. Step 5: Solve for x
    x = 461,006,805.60/18,754.50
  6. Step 6: Final answer
    x = 24,581.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.