Home / 27,811.32-38,382.84-15,876.36

Finding the Fourth Proportional to 27,811.32, 38,382.84 and 15,876.36

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Solution

The fourth proportional to 27,811.32, 38,382.84 and 15,876.36 is: 21,911.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,811.32 : 38,382.84 = 15,876.36 : x
  2. Step 2: Convert to fraction form
    27,811.32/38,382.84 = 15,876.36/x
  3. Step 3: Cross multiply
    27,811.32x = 38,382.84 × 15,876.36
  4. Step 4: Simplify right side
    27,811.32x = 609,379,785.66
  5. Step 5: Solve for x
    x = 609,379,785.66/27,811.32
  6. Step 6: Final answer
    x = 21,911.21

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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.