Home / 20,269.90-30,470.23-18,795.95

Finding the Fourth Proportional to 20,269.90, 30,470.23 and 18,795.95

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Solution

The fourth proportional to 20,269.90, 30,470.23 and 18,795.95 is: 28,254.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.90 : 30,470.23 = 18,795.95 : x
  2. Step 2: Convert to fraction form
    20,269.90/30,470.23 = 18,795.95/x
  3. Step 3: Cross multiply
    20,269.90x = 30,470.23 × 18,795.95
  4. Step 4: Simplify right side
    20,269.90x = 572,716,799.25
  5. Step 5: Solve for x
    x = 572,716,799.25/20,269.90
  6. Step 6: Final answer
    x = 28,254.55

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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.