Home / 10,272.80-15,400.56-5,331.80

Finding the Fourth Proportional to 10,272.80, 15,400.56 and 5,331.80

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Solution

The fourth proportional to 10,272.80, 15,400.56 and 5,331.80 is: 7,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,272.80 : 15,400.56 = 5,331.80 : x
  2. Step 2: Convert to fraction form
    10,272.80/15,400.56 = 5,331.80/x
  3. Step 3: Cross multiply
    10,272.80x = 15,400.56 × 5,331.80
  4. Step 4: Simplify right side
    10,272.80x = 82,112,705.81
  5. Step 5: Solve for x
    x = 82,112,705.81/10,272.80
  6. Step 6: Final answer
    x = 7,993.22

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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.