Home / 39,877.20-59,815.80-21,214.80

Finding the Fourth Proportional to 39,877.20, 59,815.80 and 21,214.80

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Solution

The fourth proportional to 39,877.20, 59,815.80 and 21,214.80 is: 31,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,877.20 : 59,815.80 = 21,214.80 : x
  2. Step 2: Convert to fraction form
    39,877.20/59,815.80 = 21,214.80/x
  3. Step 3: Cross multiply
    39,877.20x = 59,815.80 × 21,214.80
  4. Step 4: Simplify right side
    39,877.20x = 1,268,980,233.84
  5. Step 5: Solve for x
    x = 1,268,980,233.84/39,877.20
  6. Step 6: Final answer
    x = 31,822.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.