Home / 21,231.05-29,299.59-12,734.55

Finding the Fourth Proportional to 21,231.05, 29,299.59 and 12,734.55

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Solution

The fourth proportional to 21,231.05, 29,299.59 and 12,734.55 is: 17,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.05 : 29,299.59 = 12,734.55 : x
  2. Step 2: Convert to fraction form
    21,231.05/29,299.59 = 12,734.55/x
  3. Step 3: Cross multiply
    21,231.05x = 29,299.59 × 12,734.55
  4. Step 4: Simplify right side
    21,231.05x = 373,117,093.83
  5. Step 5: Solve for x
    x = 373,117,093.83/21,231.05
  6. Step 6: Final answer
    x = 17,574.13

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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.