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Finding the Fourth Proportional to 15,795.73, 21,798.10 and 8,722.14

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Solution

The fourth proportional to 15,795.73, 21,798.10 and 8,722.14 is: 12,036.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,795.73 : 21,798.10 = 8,722.14 : x
  2. Step 2: Convert to fraction form
    15,795.73/21,798.10 = 8,722.14/x
  3. Step 3: Cross multiply
    15,795.73x = 21,798.10 × 8,722.14
  4. Step 4: Simplify right side
    15,795.73x = 190,126,079.93
  5. Step 5: Solve for x
    x = 190,126,079.93/15,795.73
  6. Step 6: Final answer
    x = 12,036.55

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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.