Home / 10,215.32-15,293.10-7,759.76

Finding the Fourth Proportional to 10,215.32, 15,293.10 and 7,759.76

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Solution

The fourth proportional to 10,215.32, 15,293.10 and 7,759.76 is: 11,616.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.32 : 15,293.10 = 7,759.76 : x
  2. Step 2: Convert to fraction form
    10,215.32/15,293.10 = 7,759.76/x
  3. Step 3: Cross multiply
    10,215.32x = 15,293.10 × 7,759.76
  4. Step 4: Simplify right side
    10,215.32x = 118,670,785.66
  5. Step 5: Solve for x
    x = 118,670,785.66/10,215.32
  6. Step 6: Final answer
    x = 11,616.94

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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.