Home / 27,818.76-38,393.46-15,879.36

Finding the Fourth Proportional to 27,818.76, 38,393.46 and 15,879.36

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Solution

The fourth proportional to 27,818.76, 38,393.46 and 15,879.36 is: 21,915.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,818.76 : 38,393.46 = 15,879.36 : x
  2. Step 2: Convert to fraction form
    27,818.76/38,393.46 = 15,879.36/x
  3. Step 3: Cross multiply
    27,818.76x = 38,393.46 × 15,879.36
  4. Step 4: Simplify right side
    27,818.76x = 609,663,572.99
  5. Step 5: Solve for x
    x = 609,663,572.99/27,818.76
  6. Step 6: Final answer
    x = 21,915.56

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Half scale
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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.