Home / 27,977.96-38,609.46-15,402.70

Finding the Fourth Proportional to 27,977.96, 38,609.46 and 15,402.70

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Solution

The fourth proportional to 27,977.96, 38,609.46 and 15,402.70 is: 21,255.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,977.96 : 38,609.46 = 15,402.70 : x
  2. Step 2: Convert to fraction form
    27,977.96/38,609.46 = 15,402.70/x
  3. Step 3: Cross multiply
    27,977.96x = 38,609.46 × 15,402.70
  4. Step 4: Simplify right side
    27,977.96x = 594,689,929.54
  5. Step 5: Solve for x
    x = 594,689,929.54/27,977.96
  6. Step 6: Final answer
    x = 21,255.66

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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.