Home / 28,292.28-39,044.52-15,717

Finding the Fourth Proportional to 28,292.28, 39,044.52 and 15,717

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Solution

The fourth proportional to 28,292.28, 39,044.52 and 15,717 is: 21,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.28 : 39,044.52 = 15,717 : x
  2. Step 2: Convert to fraction form
    28,292.28/39,044.52 = 15,717/x
  3. Step 3: Cross multiply
    28,292.28x = 39,044.52 × 15,717
  4. Step 4: Simplify right side
    28,292.28x = 613,662,720.84
  5. Step 5: Solve for x
    x = 613,662,720.84/28,292.28
  6. Step 6: Final answer
    x = 21,690.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.