Home / 39,436.04-54,420.18-21,531.80

Finding the Fourth Proportional to 39,436.04, 54,420.18 and 21,531.80

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Solution

The fourth proportional to 39,436.04, 54,420.18 and 21,531.80 is: 29,713.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,436.04 : 54,420.18 = 21,531.80 : x
  2. Step 2: Convert to fraction form
    39,436.04/54,420.18 = 21,531.80/x
  3. Step 3: Cross multiply
    39,436.04x = 54,420.18 × 21,531.80
  4. Step 4: Simplify right side
    39,436.04x = 1,171,764,431.72
  5. Step 5: Solve for x
    x = 1,171,764,431.72/39,436.04
  6. Step 6: Final answer
    x = 29,713.03

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1.5x scale

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.