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Finding the Fourth Proportional to 15,959.63, 22,018.31 and 9,242.81

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Solution

The fourth proportional to 15,959.63, 22,018.31 and 9,242.81 is: 12,751.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,959.63 : 22,018.31 = 9,242.81 : x
  2. Step 2: Convert to fraction form
    15,959.63/22,018.31 = 9,242.81/x
  3. Step 3: Cross multiply
    15,959.63x = 22,018.31 × 9,242.81
  4. Step 4: Simplify right side
    15,959.63x = 203,510,990.78
  5. Step 5: Solve for x
    x = 203,510,990.78/15,959.63
  6. Step 6: Final answer
    x = 12,751.61

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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.