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Finding the Fourth Proportional to 15,807.31, 21,815.11 and 8,733.74

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Solution

The fourth proportional to 15,807.31, 21,815.11 and 8,733.74 is: 12,053.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807.31 : 21,815.11 = 8,733.74 : x
  2. Step 2: Convert to fraction form
    15,807.31/21,815.11 = 8,733.74/x
  3. Step 3: Cross multiply
    15,807.31x = 21,815.11 × 8,733.74
  4. Step 4: Simplify right side
    15,807.31x = 190,527,400.65
  5. Step 5: Solve for x
    x = 190,527,400.65/15,807.31
  6. Step 6: Final answer
    x = 12,053.12

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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.