Home / 20,187.38-30,285.04-7,040.18

Finding the Fourth Proportional to 20,187.38, 30,285.04 and 7,040.18

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Solution

The fourth proportional to 20,187.38, 30,285.04 and 7,040.18 is: 10,561.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.38 : 30,285.04 = 7,040.18 : x
  2. Step 2: Convert to fraction form
    20,187.38/30,285.04 = 7,040.18/x
  3. Step 3: Cross multiply
    20,187.38x = 30,285.04 × 7,040.18
  4. Step 4: Simplify right side
    20,187.38x = 213,212,132.91
  5. Step 5: Solve for x
    x = 213,212,132.91/20,187.38
  6. Step 6: Final answer
    x = 10,561.65

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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.