Home / 28,569.28-39,425.76-15,822.88

Finding the Fourth Proportional to 28,569.28, 39,425.76 and 15,822.88

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Solution

The fourth proportional to 28,569.28, 39,425.76 and 15,822.88 is: 21,835.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.28 : 39,425.76 = 15,822.88 : x
  2. Step 2: Convert to fraction form
    28,569.28/39,425.76 = 15,822.88/x
  3. Step 3: Cross multiply
    28,569.28x = 39,425.76 × 15,822.88
  4. Step 4: Simplify right side
    28,569.28x = 623,829,069.39
  5. Step 5: Solve for x
    x = 623,829,069.39/28,569.28
  6. Step 6: Final answer
    x = 21,835.66

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1.5x scale

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.