Home / 15,434.72-21,299.84-8,719.82

Finding the Fourth Proportional to 15,434.72, 21,299.84 and 8,719.82

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Solution

The fourth proportional to 15,434.72, 21,299.84 and 8,719.82 is: 12,033.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,434.72 : 21,299.84 = 8,719.82 : x
  2. Step 2: Convert to fraction form
    15,434.72/21,299.84 = 8,719.82/x
  3. Step 3: Cross multiply
    15,434.72x = 21,299.84 × 8,719.82
  4. Step 4: Simplify right side
    15,434.72x = 185,730,770.83
  5. Step 5: Solve for x
    x = 185,730,770.83/15,434.72
  6. Step 6: Final answer
    x = 12,033.31

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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.