Home / 39,756.21-54,863.58-21,851.22

Finding the Fourth Proportional to 39,756.21, 54,863.58 and 21,851.22

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Solution

The fourth proportional to 39,756.21, 54,863.58 and 21,851.22 is: 30,154.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.21 : 54,863.58 = 21,851.22 : x
  2. Step 2: Convert to fraction form
    39,756.21/54,863.58 = 21,851.22/x
  3. Step 3: Cross multiply
    39,756.21x = 54,863.58 × 21,851.22
  4. Step 4: Simplify right side
    39,756.21x = 1,198,836,156.57
  5. Step 5: Solve for x
    x = 1,198,836,156.57/39,756.21
  6. Step 6: Final answer
    x = 30,154.69

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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.