Home / 21,621.25-29,837.33-11,685.25

Finding the Fourth Proportional to 21,621.25, 29,837.33 and 11,685.25

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Solution

The fourth proportional to 21,621.25, 29,837.33 and 11,685.25 is: 16,125.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.25 : 29,837.33 = 11,685.25 : x
  2. Step 2: Convert to fraction form
    21,621.25/29,837.33 = 11,685.25/x
  3. Step 3: Cross multiply
    21,621.25x = 29,837.33 × 11,685.25
  4. Step 4: Simplify right side
    21,621.25x = 348,656,660.38
  5. Step 5: Solve for x
    x = 348,656,660.38/21,621.25
  6. Step 6: Final answer
    x = 16,125.65

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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.