Home / 28,168.72-38,837.55-18,079.36

Finding the Fourth Proportional to 28,168.72, 38,837.55 and 18,079.36

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Solution

The fourth proportional to 28,168.72, 38,837.55 and 18,079.36 is: 24,926.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.72 : 38,837.55 = 18,079.36 : x
  2. Step 2: Convert to fraction form
    28,168.72/38,837.55 = 18,079.36/x
  3. Step 3: Cross multiply
    28,168.72x = 38,837.55 × 18,079.36
  4. Step 4: Simplify right side
    28,168.72x = 702,158,047.97
  5. Step 5: Solve for x
    x = 702,158,047.97/28,168.72
  6. Step 6: Final answer
    x = 24,926.87

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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.