Home / 10,539.82-15,820.40-5,278.60

Finding the Fourth Proportional to 10,539.82, 15,820.40 and 5,278.60

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Solution

The fourth proportional to 10,539.82, 15,820.40 and 5,278.60 is: 7,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,539.82 : 15,820.40 = 5,278.60 : x
  2. Step 2: Convert to fraction form
    10,539.82/15,820.40 = 5,278.60/x
  3. Step 3: Cross multiply
    10,539.82x = 15,820.40 × 5,278.60
  4. Step 4: Simplify right side
    10,539.82x = 83,509,563.44
  5. Step 5: Solve for x
    x = 83,509,563.44/10,539.82
  6. Step 6: Final answer
    x = 7,923.24

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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.