Home / 39,409.86-54,385.92-21,505.02

Finding the Fourth Proportional to 39,409.86, 54,385.92 and 21,505.02

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Solution

The fourth proportional to 39,409.86, 54,385.92 and 21,505.02 is: 29,677.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,409.86 : 54,385.92 = 21,505.02 : x
  2. Step 2: Convert to fraction form
    39,409.86/54,385.92 = 21,505.02/x
  3. Step 3: Cross multiply
    39,409.86x = 54,385.92 × 21,505.02
  4. Step 4: Simplify right side
    39,409.86x = 1,169,570,297.32
  5. Step 5: Solve for x
    x = 1,169,570,297.32/39,409.86
  6. Step 6: Final answer
    x = 29,677.10

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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.