Home / 20,135.04-30,200.40-12,330.24

Finding the Fourth Proportional to 20,135.04, 30,200.40 and 12,330.24

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Solution

The fourth proportional to 20,135.04, 30,200.40 and 12,330.24 is: 18,494.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.04 : 30,200.40 = 12,330.24 : x
  2. Step 2: Convert to fraction form
    20,135.04/30,200.40 = 12,330.24/x
  3. Step 3: Cross multiply
    20,135.04x = 30,200.40 × 12,330.24
  4. Step 4: Simplify right side
    20,135.04x = 372,378,180.10
  5. Step 5: Solve for x
    x = 372,378,180.10/20,135.04
  6. Step 6: Final answer
    x = 18,494.04

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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.