Home / 20,463.60-30,713.40-12,133.20

Finding the Fourth Proportional to 20,463.60, 30,713.40 and 12,133.20

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Solution

The fourth proportional to 20,463.60, 30,713.40 and 12,133.20 is: 18,210.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.60 : 30,713.40 = 12,133.20 : x
  2. Step 2: Convert to fraction form
    20,463.60/30,713.40 = 12,133.20/x
  3. Step 3: Cross multiply
    20,463.60x = 30,713.40 × 12,133.20
  4. Step 4: Simplify right side
    20,463.60x = 372,651,824.88
  5. Step 5: Solve for x
    x = 372,651,824.88/20,463.60
  6. Step 6: Final answer
    x = 18,210.47

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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.