Home / 39,505.78-54,518.01-21,600.82

Finding the Fourth Proportional to 39,505.78, 54,518.01 and 21,600.82

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Solution

The fourth proportional to 39,505.78, 54,518.01 and 21,600.82 is: 29,809.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,505.78 : 54,518.01 = 21,600.82 : x
  2. Step 2: Convert to fraction form
    39,505.78/54,518.01 = 21,600.82/x
  3. Step 3: Cross multiply
    39,505.78x = 54,518.01 × 21,600.82
  4. Step 4: Simplify right side
    39,505.78x = 1,177,633,720.77
  5. Step 5: Solve for x
    x = 1,177,633,720.77/39,505.78
  6. Step 6: Final answer
    x = 29,809.15

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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.