Home / 28,062.16-42,064.80-18,207.72

Finding the Fourth Proportional to 28,062.16, 42,064.80 and 18,207.72

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Solution

The fourth proportional to 28,062.16, 42,064.80 and 18,207.72 is: 27,293.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.16 : 42,064.80 = 18,207.72 : x
  2. Step 2: Convert to fraction form
    28,062.16/42,064.80 = 18,207.72/x
  3. Step 3: Cross multiply
    28,062.16x = 42,064.80 × 18,207.72
  4. Step 4: Simplify right side
    28,062.16x = 765,904,100.26
  5. Step 5: Solve for x
    x = 765,904,100.26/28,062.16
  6. Step 6: Final answer
    x = 27,293.13

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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.