Home / 27,853.94-38,438.64-15,278.69

Finding the Fourth Proportional to 27,853.94, 38,438.64 and 15,278.69

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Solution

The fourth proportional to 27,853.94, 38,438.64 and 15,278.69 is: 21,084.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,853.94 : 38,438.64 = 15,278.69 : x
  2. Step 2: Convert to fraction form
    27,853.94/38,438.64 = 15,278.69/x
  3. Step 3: Cross multiply
    27,853.94x = 38,438.64 × 15,278.69
  4. Step 4: Simplify right side
    27,853.94x = 587,292,064.58
  5. Step 5: Solve for x
    x = 587,292,064.58/27,853.94
  6. Step 6: Final answer
    x = 21,084.70

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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.