Home / 28,121.30-38,815.09-17,504.63

Finding the Fourth Proportional to 28,121.30, 38,815.09 and 17,504.63

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Solution

The fourth proportional to 28,121.30, 38,815.09 and 17,504.63 is: 24,161.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.30 : 38,815.09 = 17,504.63 : x
  2. Step 2: Convert to fraction form
    28,121.30/38,815.09 = 17,504.63/x
  3. Step 3: Cross multiply
    28,121.30x = 38,815.09 × 17,504.63
  4. Step 4: Simplify right side
    28,121.30x = 679,443,551.03
  5. Step 5: Solve for x
    x = 679,443,551.03/28,121.30
  6. Step 6: Final answer
    x = 24,161.18

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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.