Home / 39,728.68-54,825.72-21,824.03

Finding the Fourth Proportional to 39,728.68, 54,825.72 and 21,824.03

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Solution

The fourth proportional to 39,728.68, 54,825.72 and 21,824.03 is: 30,117.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,728.68 : 54,825.72 = 21,824.03 : x
  2. Step 2: Convert to fraction form
    39,728.68/54,825.72 = 21,824.03/x
  3. Step 3: Cross multiply
    39,728.68x = 54,825.72 × 21,824.03
  4. Step 4: Simplify right side
    39,728.68x = 1,196,518,158.05
  5. Step 5: Solve for x
    x = 1,196,518,158.05/39,728.68
  6. Step 6: Final answer
    x = 30,117.24

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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.