Home / 39,916.80-59,877.04-13,621.80

Finding the Fourth Proportional to 39,916.80, 59,877.04 and 13,621.80

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Solution

The fourth proportional to 39,916.80, 59,877.04 and 13,621.80 is: 20,433.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,916.80 : 59,877.04 = 13,621.80 : x
  2. Step 2: Convert to fraction form
    39,916.80/59,877.04 = 13,621.80/x
  3. Step 3: Cross multiply
    39,916.80x = 59,877.04 × 13,621.80
  4. Step 4: Simplify right side
    39,916.80x = 815,633,063.47
  5. Step 5: Solve for x
    x = 815,633,063.47/39,916.80
  6. Step 6: Final answer
    x = 20,433.33

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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.