Home / 20,330.38-30,470.05-10,970.02

Finding the Fourth Proportional to 20,330.38, 30,470.05 and 10,970.02

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Solution

The fourth proportional to 20,330.38, 30,470.05 and 10,970.02 is: 16,441.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.38 : 30,470.05 = 10,970.02 : x
  2. Step 2: Convert to fraction form
    20,330.38/30,470.05 = 10,970.02/x
  3. Step 3: Cross multiply
    20,330.38x = 30,470.05 × 10,970.02
  4. Step 4: Simplify right side
    20,330.38x = 334,257,057.90
  5. Step 5: Solve for x
    x = 334,257,057.90/20,330.38
  6. Step 6: Final answer
    x = 16,441.26

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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.