Home / 27,821.27-38,392.79-19,877.00

Finding the Fourth Proportional to 27,821.27, 38,392.79 and 19,877.00

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Solution

The fourth proportional to 27,821.27, 38,392.79 and 19,877.00 is: 27,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,821.27 : 38,392.79 = 19,877.00 : x
  2. Step 2: Convert to fraction form
    27,821.27/38,392.79 = 19,877.00/x
  3. Step 3: Cross multiply
    27,821.27x = 38,392.79 × 19,877.00
  4. Step 4: Simplify right side
    27,821.27x = 763,133,195.48
  5. Step 5: Solve for x
    x = 763,133,195.48/27,821.27
  6. Step 6: Final answer
    x = 27,429.85

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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.