Home / 28,590.50-42,838.38-20,229.08

Finding the Fourth Proportional to 28,590.50, 42,838.38 and 20,229.08

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Solution

The fourth proportional to 28,590.50, 42,838.38 and 20,229.08 is: 30,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,590.50 : 42,838.38 = 20,229.08 : x
  2. Step 2: Convert to fraction form
    28,590.50/42,838.38 = 20,229.08/x
  3. Step 3: Cross multiply
    28,590.50x = 42,838.38 × 20,229.08
  4. Step 4: Simplify right side
    28,590.50x = 866,581,016.09
  5. Step 5: Solve for x
    x = 866,581,016.09/28,590.50
  6. Step 6: Final answer
    x = 30,310.10

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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.