Home / 27,884.32-38,470.93-15,939.21

Finding the Fourth Proportional to 27,884.32, 38,470.93 and 15,939.21

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Solution

The fourth proportional to 27,884.32, 38,470.93 and 15,939.21 is: 21,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,884.32 : 38,470.93 = 15,939.21 : x
  2. Step 2: Convert to fraction form
    27,884.32/38,470.93 = 15,939.21/x
  3. Step 3: Cross multiply
    27,884.32x = 38,470.93 × 15,939.21
  4. Step 4: Simplify right side
    27,884.32x = 613,196,232.17
  5. Step 5: Solve for x
    x = 613,196,232.17/27,884.32
  6. Step 6: Final answer
    x = 21,990.72

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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.