Home / 27,810.92-38,382.72-15,871.52

Finding the Fourth Proportional to 27,810.92, 38,382.72 and 15,871.52

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Solution

The fourth proportional to 27,810.92, 38,382.72 and 15,871.52 is: 21,904.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,810.92 : 38,382.72 = 15,871.52 : x
  2. Step 2: Convert to fraction form
    27,810.92/38,382.72 = 15,871.52/x
  3. Step 3: Cross multiply
    27,810.92x = 38,382.72 × 15,871.52
  4. Step 4: Simplify right side
    27,810.92x = 609,192,108.13
  5. Step 5: Solve for x
    x = 609,192,108.13/27,810.92
  6. Step 6: Final answer
    x = 21,904.78

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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.