Home / 21,212.42-29,250.33-13,251.74

Finding the Fourth Proportional to 21,212.42, 29,250.33 and 13,251.74

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Solution

The fourth proportional to 21,212.42, 29,250.33 and 13,251.74 is: 18,273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.42 : 29,250.33 = 13,251.74 : x
  2. Step 2: Convert to fraction form
    21,212.42/29,250.33 = 13,251.74/x
  3. Step 3: Cross multiply
    21,212.42x = 29,250.33 × 13,251.74
  4. Step 4: Simplify right side
    21,212.42x = 387,617,768.07
  5. Step 5: Solve for x
    x = 387,617,768.07/21,212.42
  6. Step 6: Final answer
    x = 18,273.15

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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.