Home / 39,724.12-54,816.04-21,819.04

Finding the Fourth Proportional to 39,724.12, 54,816.04 and 21,819.04

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Solution

The fourth proportional to 39,724.12, 54,816.04 and 21,819.04 is: 30,108.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,724.12 : 54,816.04 = 21,819.04 : x
  2. Step 2: Convert to fraction form
    39,724.12/54,816.04 = 21,819.04/x
  3. Step 3: Cross multiply
    39,724.12x = 54,816.04 × 21,819.04
  4. Step 4: Simplify right side
    39,724.12x = 1,196,033,369.40
  5. Step 5: Solve for x
    x = 1,196,033,369.40/39,724.12
  6. Step 6: Final answer
    x = 30,108.49

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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.