Home / 21,855.96-32,782.05-13,084.20

Finding the Fourth Proportional to 21,855.96, 32,782.05 and 13,084.20

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Solution

The fourth proportional to 21,855.96, 32,782.05 and 13,084.20 is: 19,625.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.96 : 32,782.05 = 13,084.20 : x
  2. Step 2: Convert to fraction form
    21,855.96/32,782.05 = 13,084.20/x
  3. Step 3: Cross multiply
    21,855.96x = 32,782.05 × 13,084.20
  4. Step 4: Simplify right side
    21,855.96x = 428,926,898.61
  5. Step 5: Solve for x
    x = 428,926,898.61/21,855.96
  6. Step 6: Final answer
    x = 19,625.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.