Home / 18,471.18-25,433.55-16,985.10

Finding the Fourth Proportional to 18,471.18, 25,433.55 and 16,985.10

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Solution

The fourth proportional to 18,471.18, 25,433.55 and 16,985.10 is: 23,387.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.18 : 25,433.55 = 16,985.10 : x
  2. Step 2: Convert to fraction form
    18,471.18/25,433.55 = 16,985.10/x
  3. Step 3: Cross multiply
    18,471.18x = 25,433.55 × 16,985.10
  4. Step 4: Simplify right side
    18,471.18x = 431,991,390.11
  5. Step 5: Solve for x
    x = 431,991,390.11/18,471.18
  6. Step 6: Final answer
    x = 23,387.32

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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.