Home / 27,853.84-38,437.64-15,278.48

Finding the Fourth Proportional to 27,853.84, 38,437.64 and 15,278.48

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Solution

The fourth proportional to 27,853.84, 38,437.64 and 15,278.48 is: 21,083.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,853.84 : 38,437.64 = 15,278.48 : x
  2. Step 2: Convert to fraction form
    27,853.84/38,437.64 = 15,278.48/x
  3. Step 3: Cross multiply
    27,853.84x = 38,437.64 × 15,278.48
  4. Step 4: Simplify right side
    27,853.84x = 587,268,713.99
  5. Step 5: Solve for x
    x = 587,268,713.99/27,853.84
  6. Step 6: Final answer
    x = 21,083.94

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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.