Home / 15,125.90-20,872.14-8,410.44

Finding the Fourth Proportional to 15,125.90, 20,872.14 and 8,410.44

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Solution

The fourth proportional to 15,125.90, 20,872.14 and 8,410.44 is: 11,605.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.90 : 20,872.14 = 8,410.44 : x
  2. Step 2: Convert to fraction form
    15,125.90/20,872.14 = 8,410.44/x
  3. Step 3: Cross multiply
    15,125.90x = 20,872.14 × 8,410.44
  4. Step 4: Simplify right side
    15,125.90x = 175,543,870.63
  5. Step 5: Solve for x
    x = 175,543,870.63/15,125.90
  6. Step 6: Final answer
    x = 11,605.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.