Home / 21,724.58-29,984.60-13,229.51

Finding the Fourth Proportional to 21,724.58, 29,984.60 and 13,229.51

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Solution

The fourth proportional to 21,724.58, 29,984.60 and 13,229.51 is: 18,259.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.58 : 29,984.60 = 13,229.51 : x
  2. Step 2: Convert to fraction form
    21,724.58/29,984.60 = 13,229.51/x
  3. Step 3: Cross multiply
    21,724.58x = 29,984.60 × 13,229.51
  4. Step 4: Simplify right side
    21,724.58x = 396,681,349.48
  5. Step 5: Solve for x
    x = 396,681,349.48/21,724.58
  6. Step 6: Final answer
    x = 18,259.57

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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.