Home / 39,405.03-54,378.74-21,499.98

Finding the Fourth Proportional to 39,405.03, 54,378.74 and 21,499.98

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Solution

The fourth proportional to 39,405.03, 54,378.74 and 21,499.98 is: 29,669.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,405.03 : 54,378.74 = 21,499.98 : x
  2. Step 2: Convert to fraction form
    39,405.03/54,378.74 = 21,499.98/x
  3. Step 3: Cross multiply
    39,405.03x = 54,378.74 × 21,499.98
  4. Step 4: Simplify right side
    39,405.03x = 1,169,141,822.43
  5. Step 5: Solve for x
    x = 1,169,141,822.43/39,405.03
  6. Step 6: Final answer
    x = 29,669.86

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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.