Home / 10,641.87-15,972.64-5,380.59

Finding the Fourth Proportional to 10,641.87, 15,972.64 and 5,380.59

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Solution

The fourth proportional to 10,641.87, 15,972.64 and 5,380.59 is: 8,075.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,641.87 : 15,972.64 = 5,380.59 : x
  2. Step 2: Convert to fraction form
    10,641.87/15,972.64 = 5,380.59/x
  3. Step 3: Cross multiply
    10,641.87x = 15,972.64 × 5,380.59
  4. Step 4: Simplify right side
    10,641.87x = 85,942,147.19
  5. Step 5: Solve for x
    x = 85,942,147.19/10,641.87
  6. Step 6: Final answer
    x = 8,075.85

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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.