Home / 20,155.80-30,233.70-16,875.30

Finding the Fourth Proportional to 20,155.80, 30,233.70 and 16,875.30

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Solution

The fourth proportional to 20,155.80, 30,233.70 and 16,875.30 is: 25,312.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.80 : 30,233.70 = 16,875.30 : x
  2. Step 2: Convert to fraction form
    20,155.80/30,233.70 = 16,875.30/x
  3. Step 3: Cross multiply
    20,155.80x = 30,233.70 × 16,875.30
  4. Step 4: Simplify right side
    20,155.80x = 510,202,757.61
  5. Step 5: Solve for x
    x = 510,202,757.61/20,155.80
  6. Step 6: Final answer
    x = 25,312.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.