Home / 28,291.89-39,042.64-15,371.05

Finding the Fourth Proportional to 28,291.89, 39,042.64 and 15,371.05

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Solution

The fourth proportional to 28,291.89, 39,042.64 and 15,371.05 is: 21,211.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.89 : 39,042.64 = 15,371.05 : x
  2. Step 2: Convert to fraction form
    28,291.89/39,042.64 = 15,371.05/x
  3. Step 3: Cross multiply
    28,291.89x = 39,042.64 × 15,371.05
  4. Step 4: Simplify right side
    28,291.89x = 600,126,371.57
  5. Step 5: Solve for x
    x = 600,126,371.57/28,291.89
  6. Step 6: Final answer
    x = 21,211.96

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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.