Home / 20,154.80-30,232.20-16,947.20

Finding the Fourth Proportional to 20,154.80, 30,232.20 and 16,947.20

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Solution

The fourth proportional to 20,154.80, 30,232.20 and 16,947.20 is: 25,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.80 : 30,232.20 = 16,947.20 : x
  2. Step 2: Convert to fraction form
    20,154.80/30,232.20 = 16,947.20/x
  3. Step 3: Cross multiply
    20,154.80x = 30,232.20 × 16,947.20
  4. Step 4: Simplify right side
    20,154.80x = 512,351,139.84
  5. Step 5: Solve for x
    x = 512,351,139.84/20,154.80
  6. Step 6: Final answer
    x = 25,420.80

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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.