Home / 28,569.12-39,422.88-15,822.02

Finding the Fourth Proportional to 28,569.12, 39,422.88 and 15,822.02

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Solution

The fourth proportional to 28,569.12, 39,422.88 and 15,822.02 is: 21,832.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.12 : 39,422.88 = 15,822.02 : x
  2. Step 2: Convert to fraction form
    28,569.12/39,422.88 = 15,822.02/x
  3. Step 3: Cross multiply
    28,569.12x = 39,422.88 × 15,822.02
  4. Step 4: Simplify right side
    28,569.12x = 623,749,398.70
  5. Step 5: Solve for x
    x = 623,749,398.70/28,569.12
  6. Step 6: Final answer
    x = 21,832.99

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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.