Home / 40,638.80-60,938.04-12,933.20

Finding the Fourth Proportional to 40,638.80, 60,938.04 and 12,933.20

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Solution

The fourth proportional to 40,638.80, 60,938.04 and 12,933.20 is: 19,393.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,638.80 : 60,938.04 = 12,933.20 : x
  2. Step 2: Convert to fraction form
    40,638.80/60,938.04 = 12,933.20/x
  3. Step 3: Cross multiply
    40,638.80x = 60,938.04 × 12,933.20
  4. Step 4: Simplify right side
    40,638.80x = 788,123,858.93
  5. Step 5: Solve for x
    x = 788,123,858.93/40,638.80
  6. Step 6: Final answer
    x = 19,393.38

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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.