Home / 15,732.82-21,703.71-9,771.42

Finding the Fourth Proportional to 15,732.82, 21,703.71 and 9,771.42

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Solution

The fourth proportional to 15,732.82, 21,703.71 and 9,771.42 is: 13,479.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,732.82 : 21,703.71 = 9,771.42 : x
  2. Step 2: Convert to fraction form
    15,732.82/21,703.71 = 9,771.42/x
  3. Step 3: Cross multiply
    15,732.82x = 21,703.71 × 9,771.42
  4. Step 4: Simplify right side
    15,732.82x = 212,076,065.97
  5. Step 5: Solve for x
    x = 212,076,065.97/15,732.82
  6. Step 6: Final answer
    x = 13,479.85

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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.