Home / 21,213.01-29,248.24-18,336.55

Finding the Fourth Proportional to 21,213.01, 29,248.24 and 18,336.55

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Solution

The fourth proportional to 21,213.01, 29,248.24 and 18,336.55 is: 25,282.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.01 : 29,248.24 = 18,336.55 : x
  2. Step 2: Convert to fraction form
    21,213.01/29,248.24 = 18,336.55/x
  3. Step 3: Cross multiply
    21,213.01x = 29,248.24 × 18,336.55
  4. Step 4: Simplify right side
    21,213.01x = 536,311,815.17
  5. Step 5: Solve for x
    x = 536,311,815.17/21,213.01
  6. Step 6: Final answer
    x = 25,282.21

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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.