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Finding the Fourth Proportional to 15,953.65, 22,015.96 and 8,879.92

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Solution

The fourth proportional to 15,953.65, 22,015.96 and 8,879.92 is: 12,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,953.65 : 22,015.96 = 8,879.92 : x
  2. Step 2: Convert to fraction form
    15,953.65/22,015.96 = 8,879.92/x
  3. Step 3: Cross multiply
    15,953.65x = 22,015.96 × 8,879.92
  4. Step 4: Simplify right side
    15,953.65x = 195,499,963.52
  5. Step 5: Solve for x
    x = 195,499,963.52/15,953.65
  6. Step 6: Final answer
    x = 12,254.25

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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.