Home / 28,001.26-42,007.56-8,279.38

Finding the Fourth Proportional to 28,001.26, 42,007.56 and 8,279.38

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Solution

The fourth proportional to 28,001.26, 42,007.56 and 8,279.38 is: 12,420.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.26 : 42,007.56 = 8,279.38 : x
  2. Step 2: Convert to fraction form
    28,001.26/42,007.56 = 8,279.38/x
  3. Step 3: Cross multiply
    28,001.26x = 42,007.56 × 8,279.38
  4. Step 4: Simplify right side
    28,001.26x = 347,796,552.11
  5. Step 5: Solve for x
    x = 347,796,552.11/28,001.26
  6. Step 6: Final answer
    x = 12,420.75

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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.