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Finding the Fourth Proportional to 15,908.74, 21,954.11 and 8,835.18

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Solution

The fourth proportional to 15,908.74, 21,954.11 and 8,835.18 is: 12,192.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,908.74 : 21,954.11 = 8,835.18 : x
  2. Step 2: Convert to fraction form
    15,908.74/21,954.11 = 8,835.18/x
  3. Step 3: Cross multiply
    15,908.74x = 21,954.11 × 8,835.18
  4. Step 4: Simplify right side
    15,908.74x = 193,968,513.59
  5. Step 5: Solve for x
    x = 193,968,513.59/15,908.74
  6. Step 6: Final answer
    x = 12,192.58

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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.