Home / 28,148.12-38,844.09-15,401.55

Finding the Fourth Proportional to 28,148.12, 38,844.09 and 15,401.55

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Solution

The fourth proportional to 28,148.12, 38,844.09 and 15,401.55 is: 21,253.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.12 : 38,844.09 = 15,401.55 : x
  2. Step 2: Convert to fraction form
    28,148.12/38,844.09 = 15,401.55/x
  3. Step 3: Cross multiply
    28,148.12x = 38,844.09 × 15,401.55
  4. Step 4: Simplify right side
    28,148.12x = 598,259,194.34
  5. Step 5: Solve for x
    x = 598,259,194.34/28,148.12
  6. Step 6: Final answer
    x = 21,253.97

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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.