Home / 15,431.64-23,159.76-5,577.84

Finding the Fourth Proportional to 15,431.64, 23,159.76 and 5,577.84

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Solution

The fourth proportional to 15,431.64, 23,159.76 and 5,577.84 is: 8,371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.64 : 23,159.76 = 5,577.84 : x
  2. Step 2: Convert to fraction form
    15,431.64/23,159.76 = 5,577.84/x
  3. Step 3: Cross multiply
    15,431.64x = 23,159.76 × 5,577.84
  4. Step 4: Simplify right side
    15,431.64x = 129,181,435.72
  5. Step 5: Solve for x
    x = 129,181,435.72/15,431.64
  6. Step 6: Final answer
    x = 8,371.21

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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.