Home / 39,309.48-54,247.32-21,405.02

Finding the Fourth Proportional to 39,309.48, 54,247.32 and 21,405.02

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Solution

The fourth proportional to 39,309.48, 54,247.32 and 21,405.02 is: 29,539.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.48 : 54,247.32 = 21,405.02 : x
  2. Step 2: Convert to fraction form
    39,309.48/54,247.32 = 21,405.02/x
  3. Step 3: Cross multiply
    39,309.48x = 54,247.32 × 21,405.02
  4. Step 4: Simplify right side
    39,309.48x = 1,161,164,698.31
  5. Step 5: Solve for x
    x = 1,161,164,698.31/39,309.48
  6. Step 6: Final answer
    x = 29,539.05

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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.