Home / 28,719.31-43,078.98-13,126

Finding the Fourth Proportional to 28,719.31, 43,078.98 and 13,126

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Solution

The fourth proportional to 28,719.31, 43,078.98 and 13,126 is: 19,689.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.31 : 43,078.98 = 13,126 : x
  2. Step 2: Convert to fraction form
    28,719.31/43,078.98 = 13,126/x
  3. Step 3: Cross multiply
    28,719.31x = 43,078.98 × 13,126
  4. Step 4: Simplify right side
    28,719.31x = 565,454,691.48
  5. Step 5: Solve for x
    x = 565,454,691.48/28,719.31
  6. Step 6: Final answer
    x = 19,689.01

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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.