Home / 10,331.30-15,490.38-4,777.22

Finding the Fourth Proportional to 10,331.30, 15,490.38 and 4,777.22

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Solution

The fourth proportional to 10,331.30, 15,490.38 and 4,777.22 is: 7,162.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,331.30 : 15,490.38 = 4,777.22 : x
  2. Step 2: Convert to fraction form
    10,331.30/15,490.38 = 4,777.22/x
  3. Step 3: Cross multiply
    10,331.30x = 15,490.38 × 4,777.22
  4. Step 4: Simplify right side
    10,331.30x = 74,000,953.14
  5. Step 5: Solve for x
    x = 74,000,953.14/10,331.30
  6. Step 6: Final answer
    x = 7,162.79

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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.