Home / 10,257.41-15,380.64-5,314.79

Finding the Fourth Proportional to 10,257.41, 15,380.64 and 5,314.79

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Solution

The fourth proportional to 10,257.41, 15,380.64 and 5,314.79 is: 7,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,257.41 : 15,380.64 = 5,314.79 : x
  2. Step 2: Convert to fraction form
    10,257.41/15,380.64 = 5,314.79/x
  3. Step 3: Cross multiply
    10,257.41x = 15,380.64 × 5,314.79
  4. Step 4: Simplify right side
    10,257.41x = 81,744,794.76
  5. Step 5: Solve for x
    x = 81,744,794.76/10,257.41
  6. Step 6: Final answer
    x = 7,969.34

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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.