Home / 28,189.63-38,902.97-15,614.38

Finding the Fourth Proportional to 28,189.63, 38,902.97 and 15,614.38

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Solution

The fourth proportional to 28,189.63, 38,902.97 and 15,614.38 is: 21,548.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.63 : 38,902.97 = 15,614.38 : x
  2. Step 2: Convert to fraction form
    28,189.63/38,902.97 = 15,614.38/x
  3. Step 3: Cross multiply
    28,189.63x = 38,902.97 × 15,614.38
  4. Step 4: Simplify right side
    28,189.63x = 607,445,484.12
  5. Step 5: Solve for x
    x = 607,445,484.12/28,189.63
  6. Step 6: Final answer
    x = 21,548.55

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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.