Home / 39,729.87-54,824.51-21,825.63

Finding the Fourth Proportional to 39,729.87, 54,824.51 and 21,825.63

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Solution

The fourth proportional to 39,729.87, 54,824.51 and 21,825.63 is: 30,117.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,729.87 : 54,824.51 = 21,825.63 : x
  2. Step 2: Convert to fraction form
    39,729.87/54,824.51 = 21,825.63/x
  3. Step 3: Cross multiply
    39,729.87x = 54,824.51 × 21,825.63
  4. Step 4: Simplify right side
    39,729.87x = 1,196,579,524.76
  5. Step 5: Solve for x
    x = 1,196,579,524.76/39,729.87
  6. Step 6: Final answer
    x = 30,117.88

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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.