Home / 28,261.24-42,389.40-10,731.20

Finding the Fourth Proportional to 28,261.24, 42,389.40 and 10,731.20

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Solution

The fourth proportional to 28,261.24, 42,389.40 and 10,731.20 is: 16,095.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.24 : 42,389.40 = 10,731.20 : x
  2. Step 2: Convert to fraction form
    28,261.24/42,389.40 = 10,731.20/x
  3. Step 3: Cross multiply
    28,261.24x = 42,389.40 × 10,731.20
  4. Step 4: Simplify right side
    28,261.24x = 454,889,129.28
  5. Step 5: Solve for x
    x = 454,889,129.28/28,261.24
  6. Step 6: Final answer
    x = 16,095.87

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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.