Home / 39,243.02-54,156.05-21,338.15

Finding the Fourth Proportional to 39,243.02, 54,156.05 and 21,338.15

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Solution

The fourth proportional to 39,243.02, 54,156.05 and 21,338.15 is: 29,447.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.02 : 54,156.05 = 21,338.15 : x
  2. Step 2: Convert to fraction form
    39,243.02/54,156.05 = 21,338.15/x
  3. Step 3: Cross multiply
    39,243.02x = 54,156.05 × 21,338.15
  4. Step 4: Simplify right side
    39,243.02x = 1,155,589,540.84
  5. Step 5: Solve for x
    x = 1,155,589,540.84/39,243.02
  6. Step 6: Final answer
    x = 29,447.01

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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.