Home / 27,920.08-38,489.88-19,959.40

Finding the Fourth Proportional to 27,920.08, 38,489.88 and 19,959.40

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Solution

The fourth proportional to 27,920.08, 38,489.88 and 19,959.40 is: 27,515.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,920.08 : 38,489.88 = 19,959.40 : x
  2. Step 2: Convert to fraction form
    27,920.08/38,489.88 = 19,959.40/x
  3. Step 3: Cross multiply
    27,920.08x = 38,489.88 × 19,959.40
  4. Step 4: Simplify right side
    27,920.08x = 768,234,910.87
  5. Step 5: Solve for x
    x = 768,234,910.87/27,920.08
  6. Step 6: Final answer
    x = 27,515.50

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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.