Home / 10,279.80-15,387.30-7,363.80

Finding the Fourth Proportional to 10,279.80, 15,387.30 and 7,363.80

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Solution

The fourth proportional to 10,279.80, 15,387.30 and 7,363.80 is: 11,022.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.80 : 15,387.30 = 7,363.80 : x
  2. Step 2: Convert to fraction form
    10,279.80/15,387.30 = 7,363.80/x
  3. Step 3: Cross multiply
    10,279.80x = 15,387.30 × 7,363.80
  4. Step 4: Simplify right side
    10,279.80x = 113,308,999.74
  5. Step 5: Solve for x
    x = 113,308,999.74/10,279.80
  6. Step 6: Final answer
    x = 11,022.49

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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.