Home / 18,721.16-28,062.30-7,623.08

Finding the Fourth Proportional to 18,721.16, 28,062.30 and 7,623.08

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Solution

The fourth proportional to 18,721.16, 28,062.30 and 7,623.08 is: 11,426.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.16 : 28,062.30 = 7,623.08 : x
  2. Step 2: Convert to fraction form
    18,721.16/28,062.30 = 7,623.08/x
  3. Step 3: Cross multiply
    18,721.16x = 28,062.30 × 7,623.08
  4. Step 4: Simplify right side
    18,721.16x = 213,921,157.88
  5. Step 5: Solve for x
    x = 213,921,157.88/18,721.16
  6. Step 6: Final answer
    x = 11,426.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.