Home / 27,986.92-38,620.20-15,411.64

Finding the Fourth Proportional to 27,986.92, 38,620.20 and 15,411.64

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Solution

The fourth proportional to 27,986.92, 38,620.20 and 15,411.64 is: 21,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.92 : 38,620.20 = 15,411.64 : x
  2. Step 2: Convert to fraction form
    27,986.92/38,620.20 = 15,411.64/x
  3. Step 3: Cross multiply
    27,986.92x = 38,620.20 × 15,411.64
  4. Step 4: Simplify right side
    27,986.92x = 595,200,619.13
  5. Step 5: Solve for x
    x = 595,200,619.13/27,986.92
  6. Step 6: Final answer
    x = 21,267.10

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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.