Home / 39,447.61-54,435.31-21,538.98

Finding the Fourth Proportional to 39,447.61, 54,435.31 and 21,538.98

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Solution

The fourth proportional to 39,447.61, 54,435.31 and 21,538.98 is: 29,722.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,447.61 : 54,435.31 = 21,538.98 : x
  2. Step 2: Convert to fraction form
    39,447.61/54,435.31 = 21,538.98/x
  3. Step 3: Cross multiply
    39,447.61x = 54,435.31 × 21,538.98
  4. Step 4: Simplify right side
    39,447.61x = 1,172,480,999.54
  5. Step 5: Solve for x
    x = 1,172,480,999.54/39,447.61
  6. Step 6: Final answer
    x = 29,722.49

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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.