Home / 20,352.20-30,470.70-18,278.60

Finding the Fourth Proportional to 20,352.20, 30,470.70 and 18,278.60

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Solution

The fourth proportional to 20,352.20, 30,470.70 and 18,278.60 is: 27,366.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.20 : 30,470.70 = 18,278.60 : x
  2. Step 2: Convert to fraction form
    20,352.20/30,470.70 = 18,278.60/x
  3. Step 3: Cross multiply
    20,352.20x = 30,470.70 × 18,278.60
  4. Step 4: Simplify right side
    20,352.20x = 556,961,737.02
  5. Step 5: Solve for x
    x = 556,961,737.02/20,352.20
  6. Step 6: Final answer
    x = 27,366.17

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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.