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Finding the Fourth Proportional to 15,959.76, 22,025.04 and 8,790

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Solution

The fourth proportional to 15,959.76, 22,025.04 and 8,790 is: 12,130.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,959.76 : 22,025.04 = 8,790 : x
  2. Step 2: Convert to fraction form
    15,959.76/22,025.04 = 8,790/x
  3. Step 3: Cross multiply
    15,959.76x = 22,025.04 × 8,790
  4. Step 4: Simplify right side
    15,959.76x = 193,600,101.60
  5. Step 5: Solve for x
    x = 193,600,101.60/15,959.76
  6. Step 6: Final answer
    x = 12,130.51

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