Home / 20,239.12-30,352.76-7,089.04

Finding the Fourth Proportional to 20,239.12, 30,352.76 and 7,089.04

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Solution

The fourth proportional to 20,239.12, 30,352.76 and 7,089.04 is: 10,631.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.12 : 30,352.76 = 7,089.04 : x
  2. Step 2: Convert to fraction form
    20,239.12/30,352.76 = 7,089.04/x
  3. Step 3: Cross multiply
    20,239.12x = 30,352.76 × 7,089.04
  4. Step 4: Simplify right side
    20,239.12x = 215,171,929.75
  5. Step 5: Solve for x
    x = 215,171,929.75/20,239.12
  6. Step 6: Final answer
    x = 10,631.49

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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.