Home / 27,979.40-38,618.16-17,377.04

Finding the Fourth Proportional to 27,979.40, 38,618.16 and 17,377.04

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Solution

The fourth proportional to 27,979.40, 38,618.16 and 17,377.04 is: 23,984.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.40 : 38,618.16 = 17,377.04 : x
  2. Step 2: Convert to fraction form
    27,979.40/38,618.16 = 17,377.04/x
  3. Step 3: Cross multiply
    27,979.40x = 38,618.16 × 17,377.04
  4. Step 4: Simplify right side
    27,979.40x = 671,069,311.05
  5. Step 5: Solve for x
    x = 671,069,311.05/27,979.40
  6. Step 6: Final answer
    x = 23,984.41

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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.