Home / 27,801.27-38,366.39-15,865.72

Finding the Fourth Proportional to 27,801.27, 38,366.39 and 15,865.72

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Solution

The fourth proportional to 27,801.27, 38,366.39 and 15,865.72 is: 21,895.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,801.27 : 38,366.39 = 15,865.72 : x
  2. Step 2: Convert to fraction form
    27,801.27/38,366.39 = 15,865.72/x
  3. Step 3: Cross multiply
    27,801.27x = 38,366.39 × 15,865.72
  4. Step 4: Simplify right side
    27,801.27x = 608,710,344.90
  5. Step 5: Solve for x
    x = 608,710,344.90/27,801.27
  6. Step 6: Final answer
    x = 21,895.06

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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.