Home / 20,135.40-30,191.28-6,091.20

Finding the Fourth Proportional to 20,135.40, 30,191.28 and 6,091.20

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Solution

The fourth proportional to 20,135.40, 30,191.28 and 6,091.20 is: 9,133.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.40 : 30,191.28 = 6,091.20 : x
  2. Step 2: Convert to fraction form
    20,135.40/30,191.28 = 6,091.20/x
  3. Step 3: Cross multiply
    20,135.40x = 30,191.28 × 6,091.20
  4. Step 4: Simplify right side
    20,135.40x = 183,901,124.74
  5. Step 5: Solve for x
    x = 183,901,124.74/20,135.40
  6. Step 6: Final answer
    x = 9,133.22

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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.