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Finding the Fourth Proportional to 28,695.96, 39,599.40 and 15,949.96

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Solution

The fourth proportional to 28,695.96, 39,599.40 and 15,949.96 is: 22,010.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,695.96 : 39,599.40 = 15,949.96 : x
  2. Step 2: Convert to fraction form
    28,695.96/39,599.40 = 15,949.96/x
  3. Step 3: Cross multiply
    28,695.96x = 39,599.40 × 15,949.96
  4. Step 4: Simplify right side
    28,695.96x = 631,608,846.02
  5. Step 5: Solve for x
    x = 631,608,846.02/28,695.96
  6. Step 6: Final answer
    x = 22,010.38

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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.