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Finding the Fourth Proportional to 18,325.10, 25,266.48 and 15,487.47

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Solution

The fourth proportional to 18,325.10, 25,266.48 and 15,487.47 is: 21,353.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,325.10 : 25,266.48 = 15,487.47 : x
  2. Step 2: Convert to fraction form
    18,325.10/25,266.48 = 15,487.47/x
  3. Step 3: Cross multiply
    18,325.10x = 25,266.48 × 15,487.47
  4. Step 4: Simplify right side
    18,325.10x = 391,313,851.01
  5. Step 5: Solve for x
    x = 391,313,851.01/18,325.10
  6. Step 6: Final answer
    x = 21,353.98

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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.