Home / 18,328.38-25,280.11-16,820.81

Finding the Fourth Proportional to 18,328.38, 25,280.11 and 16,820.81

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Solution

The fourth proportional to 18,328.38, 25,280.11 and 16,820.81 is: 23,200.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,328.38 : 25,280.11 = 16,820.81 : x
  2. Step 2: Convert to fraction form
    18,328.38/25,280.11 = 16,820.81/x
  3. Step 3: Cross multiply
    18,328.38x = 25,280.11 × 16,820.81
  4. Step 4: Simplify right side
    18,328.38x = 425,231,948.24
  5. Step 5: Solve for x
    x = 425,231,948.24/18,328.38
  6. Step 6: Final answer
    x = 23,200.73

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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.