Home / 15,731.82-21,702.33-9,770.42

Finding the Fourth Proportional to 15,731.82, 21,702.33 and 9,770.42

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Solution

The fourth proportional to 15,731.82, 21,702.33 and 9,770.42 is: 13,478.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.82 : 21,702.33 = 9,770.42 : x
  2. Step 2: Convert to fraction form
    15,731.82/21,702.33 = 9,770.42/x
  3. Step 3: Cross multiply
    15,731.82x = 21,702.33 × 9,770.42
  4. Step 4: Simplify right side
    15,731.82x = 212,040,933.33
  5. Step 5: Solve for x
    x = 212,040,933.33/15,731.82
  6. Step 6: Final answer
    x = 13,478.47

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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.