Home / 20,281.80-30,422.46-7,134.12

Finding the Fourth Proportional to 20,281.80, 30,422.46 and 7,134.12

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Solution

The fourth proportional to 20,281.80, 30,422.46 and 7,134.12 is: 10,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.80 : 30,422.46 = 7,134.12 : x
  2. Step 2: Convert to fraction form
    20,281.80/30,422.46 = 7,134.12/x
  3. Step 3: Cross multiply
    20,281.80x = 30,422.46 × 7,134.12
  4. Step 4: Simplify right side
    20,281.80x = 217,037,480.34
  5. Step 5: Solve for x
    x = 217,037,480.34/20,281.80
  6. Step 6: Final answer
    x = 10,701.10

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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.