Home / 27,920.12-38,528.30-15,342.44

Finding the Fourth Proportional to 27,920.12, 38,528.30 and 15,342.44

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Solution

The fourth proportional to 27,920.12, 38,528.30 and 15,342.44 is: 21,171.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,920.12 : 38,528.30 = 15,342.44 : x
  2. Step 2: Convert to fraction form
    27,920.12/38,528.30 = 15,342.44/x
  3. Step 3: Cross multiply
    27,920.12x = 38,528.30 × 15,342.44
  4. Step 4: Simplify right side
    27,920.12x = 591,118,131.05
  5. Step 5: Solve for x
    x = 591,118,131.05/27,920.12
  6. Step 6: Final answer
    x = 21,171.76

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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.