Home / 20,101.80-30,155.40-6,958.20

Finding the Fourth Proportional to 20,101.80, 30,155.40 and 6,958.20

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Solution

The fourth proportional to 20,101.80, 30,155.40 and 6,958.20 is: 10,438.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.80 : 30,155.40 = 6,958.20 : x
  2. Step 2: Convert to fraction form
    20,101.80/30,155.40 = 6,958.20/x
  3. Step 3: Cross multiply
    20,101.80x = 30,155.40 × 6,958.20
  4. Step 4: Simplify right side
    20,101.80x = 209,827,304.28
  5. Step 5: Solve for x
    x = 209,827,304.28/20,101.80
  6. Step 6: Final answer
    x = 10,438.23

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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.