Home / 15,347.82-21,181.80-8,633.70

Finding the Fourth Proportional to 15,347.82, 21,181.80 and 8,633.70

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Solution

The fourth proportional to 15,347.82, 21,181.80 and 8,633.70 is: 11,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.82 : 21,181.80 = 8,633.70 : x
  2. Step 2: Convert to fraction form
    15,347.82/21,181.80 = 8,633.70/x
  3. Step 3: Cross multiply
    15,347.82x = 21,181.80 × 8,633.70
  4. Step 4: Simplify right side
    15,347.82x = 182,877,306.66
  5. Step 5: Solve for x
    x = 182,877,306.66/15,347.82
  6. Step 6: Final answer
    x = 11,915.52

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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.