Home / 28,611.29-39,475.76-17,121.58

Finding the Fourth Proportional to 28,611.29, 39,475.76 and 17,121.58

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Solution

The fourth proportional to 28,611.29, 39,475.76 and 17,121.58 is: 23,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.29 : 39,475.76 = 17,121.58 : x
  2. Step 2: Convert to fraction form
    28,611.29/39,475.76 = 17,121.58/x
  3. Step 3: Cross multiply
    28,611.29x = 39,475.76 × 17,121.58
  4. Step 4: Simplify right side
    28,611.29x = 675,887,382.90
  5. Step 5: Solve for x
    x = 675,887,382.90/28,611.29
  6. Step 6: Final answer
    x = 23,623.10

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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.