Home / 39,243.48-54,156.06-21,338.70

Finding the Fourth Proportional to 39,243.48, 54,156.06 and 21,338.70

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Solution

The fourth proportional to 39,243.48, 54,156.06 and 21,338.70 is: 29,447.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.48 : 54,156.06 = 21,338.70 : x
  2. Step 2: Convert to fraction form
    39,243.48/54,156.06 = 21,338.70/x
  3. Step 3: Cross multiply
    39,243.48x = 54,156.06 × 21,338.70
  4. Step 4: Simplify right side
    39,243.48x = 1,155,619,917.52
  5. Step 5: Solve for x
    x = 1,155,619,917.52/39,243.48
  6. Step 6: Final answer
    x = 29,447.44

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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.