Home / 39,828.12-54,962.39-21,922.74

Finding the Fourth Proportional to 39,828.12, 54,962.39 and 21,922.74

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Solution

The fourth proportional to 39,828.12, 54,962.39 and 21,922.74 is: 30,253.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,828.12 : 54,962.39 = 21,922.74 : x
  2. Step 2: Convert to fraction form
    39,828.12/54,962.39 = 21,922.74/x
  3. Step 3: Cross multiply
    39,828.12x = 54,962.39 × 21,922.74
  4. Step 4: Simplify right side
    39,828.12x = 1,204,926,009.12
  5. Step 5: Solve for x
    x = 1,204,926,009.12/39,828.12
  6. Step 6: Final answer
    x = 30,253.15

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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.