Home / 39,756.01-54,864.34-21,851.49

Finding the Fourth Proportional to 39,756.01, 54,864.34 and 21,851.49

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Solution

The fourth proportional to 39,756.01, 54,864.34 and 21,851.49 is: 30,155.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.01 : 54,864.34 = 21,851.49 : x
  2. Step 2: Convert to fraction form
    39,756.01/54,864.34 = 21,851.49/x
  3. Step 3: Cross multiply
    39,756.01x = 54,864.34 × 21,851.49
  4. Step 4: Simplify right side
    39,756.01x = 1,198,867,467.61
  5. Step 5: Solve for x
    x = 1,198,867,467.61/39,756.01
  6. Step 6: Final answer
    x = 30,155.63

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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.