Home / 15,691.20-23,515.44-7,905.36

Finding the Fourth Proportional to 15,691.20, 23,515.44 and 7,905.36

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Solution

The fourth proportional to 15,691.20, 23,515.44 and 7,905.36 is: 11,847.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691.20 : 23,515.44 = 7,905.36 : x
  2. Step 2: Convert to fraction form
    15,691.20/23,515.44 = 7,905.36/x
  3. Step 3: Cross multiply
    15,691.20x = 23,515.44 × 7,905.36
  4. Step 4: Simplify right side
    15,691.20x = 185,898,018.76
  5. Step 5: Solve for x
    x = 185,898,018.76/15,691.20
  6. Step 6: Final answer
    x = 11,847.28

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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.