Home / 21,926.80-32,874-18,213.76

Finding the Fourth Proportional to 21,926.80, 32,874 and 18,213.76

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Solution

The fourth proportional to 21,926.80, 32,874 and 18,213.76 is: 27,307.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,926.80 : 32,874 = 18,213.76 : x
  2. Step 2: Convert to fraction form
    21,926.80/32,874 = 18,213.76/x
  3. Step 3: Cross multiply
    21,926.80x = 32,874 × 18,213.76
  4. Step 4: Simplify right side
    21,926.80x = 598,759,146.24
  5. Step 5: Solve for x
    x = 598,759,146.24/21,926.80
  6. Step 6: Final answer
    x = 27,307.18

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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.