Home / 20,280.56-30,434.40-7,132.88

Finding the Fourth Proportional to 20,280.56, 30,434.40 and 7,132.88

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Solution

The fourth proportional to 20,280.56, 30,434.40 and 7,132.88 is: 10,704.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.56 : 30,434.40 = 7,132.88 : x
  2. Step 2: Convert to fraction form
    20,280.56/30,434.40 = 7,132.88/x
  3. Step 3: Cross multiply
    20,280.56x = 30,434.40 × 7,132.88
  4. Step 4: Simplify right side
    20,280.56x = 217,084,923.07
  5. Step 5: Solve for x
    x = 217,084,923.07/20,280.56
  6. Step 6: Final answer
    x = 10,704.09

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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.