Home / 10,356.40-15,524.84-5,157.36

Finding the Fourth Proportional to 10,356.40, 15,524.84 and 5,157.36

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Solution

The fourth proportional to 10,356.40, 15,524.84 and 5,157.36 is: 7,731.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,356.40 : 15,524.84 = 5,157.36 : x
  2. Step 2: Convert to fraction form
    10,356.40/15,524.84 = 5,157.36/x
  3. Step 3: Cross multiply
    10,356.40x = 15,524.84 × 5,157.36
  4. Step 4: Simplify right side
    10,356.40x = 80,067,188.82
  5. Step 5: Solve for x
    x = 80,067,188.82/10,356.40
  6. Step 6: Final answer
    x = 7,731.18

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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.