Home / 15,349.79-21,181.10-8,634.84

Finding the Fourth Proportional to 15,349.79, 21,181.10 and 8,634.84

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Solution

The fourth proportional to 15,349.79, 21,181.10 and 8,634.84 is: 11,915.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.79 : 21,181.10 = 8,634.84 : x
  2. Step 2: Convert to fraction form
    15,349.79/21,181.10 = 8,634.84/x
  3. Step 3: Cross multiply
    15,349.79x = 21,181.10 × 8,634.84
  4. Step 4: Simplify right side
    15,349.79x = 182,895,398.73
  5. Step 5: Solve for x
    x = 182,895,398.73/15,349.79
  6. Step 6: Final answer
    x = 11,915.18

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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.