Home / 28,377.06-39,159.88-15,631.46

Finding the Fourth Proportional to 28,377.06, 39,159.88 and 15,631.46

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Solution

The fourth proportional to 28,377.06, 39,159.88 and 15,631.46 is: 21,571.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.06 : 39,159.88 = 15,631.46 : x
  2. Step 2: Convert to fraction form
    28,377.06/39,159.88 = 15,631.46/x
  3. Step 3: Cross multiply
    28,377.06x = 39,159.88 × 15,631.46
  4. Step 4: Simplify right side
    28,377.06x = 612,126,097.82
  5. Step 5: Solve for x
    x = 612,126,097.82/28,377.06
  6. Step 6: Final answer
    x = 21,571.16

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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.