Home / 39,730.12-54,824.86-21,825.88

Finding the Fourth Proportional to 39,730.12, 54,824.86 and 21,825.88

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Solution

The fourth proportional to 39,730.12, 54,824.86 and 21,825.88 is: 30,118.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,730.12 : 54,824.86 = 21,825.88 : x
  2. Step 2: Convert to fraction form
    39,730.12/54,824.86 = 21,825.88/x
  3. Step 3: Cross multiply
    39,730.12x = 54,824.86 × 21,825.88
  4. Step 4: Simplify right side
    39,730.12x = 1,196,600,815.38
  5. Step 5: Solve for x
    x = 1,196,600,815.38/39,730.12
  6. Step 6: Final answer
    x = 30,118.23

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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.