Home / 27,858.20-38,443.98-15,111.14

Finding the Fourth Proportional to 27,858.20, 38,443.98 and 15,111.14

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Solution

The fourth proportional to 27,858.20, 38,443.98 and 15,111.14 is: 20,853.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,858.20 : 38,443.98 = 15,111.14 : x
  2. Step 2: Convert to fraction form
    27,858.20/38,443.98 = 15,111.14/x
  3. Step 3: Cross multiply
    27,858.20x = 38,443.98 × 15,111.14
  4. Step 4: Simplify right side
    27,858.20x = 580,932,444.63
  5. Step 5: Solve for x
    x = 580,932,444.63/27,858.20
  6. Step 6: Final answer
    x = 20,853.20

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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.