Home / 27,854.14-38,438.70-15,278.89

Finding the Fourth Proportional to 27,854.14, 38,438.70 and 15,278.89

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Solution

The fourth proportional to 27,854.14, 38,438.70 and 15,278.89 is: 21,084.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,854.14 : 38,438.70 = 15,278.89 : x
  2. Step 2: Convert to fraction form
    27,854.14/38,438.70 = 15,278.89/x
  3. Step 3: Cross multiply
    27,854.14x = 38,438.70 × 15,278.89
  4. Step 4: Simplify right side
    27,854.14x = 587,300,669.04
  5. Step 5: Solve for x
    x = 587,300,669.04/27,854.14
  6. Step 6: Final answer
    x = 21,084.86

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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.