Home / 27,979.20-41,968.80-15,665.60

Finding the Fourth Proportional to 27,979.20, 41,968.80 and 15,665.60

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Solution

The fourth proportional to 27,979.20, 41,968.80 and 15,665.60 is: 23,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.20 : 41,968.80 = 15,665.60 : x
  2. Step 2: Convert to fraction form
    27,979.20/41,968.80 = 15,665.60/x
  3. Step 3: Cross multiply
    27,979.20x = 41,968.80 × 15,665.60
  4. Step 4: Simplify right side
    27,979.20x = 657,466,433.28
  5. Step 5: Solve for x
    x = 657,466,433.28/27,979.20
  6. Step 6: Final answer
    x = 23,498.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.