Home / 31,418.34-43,352.47-18,666.80

Finding the Fourth Proportional to 31,418.34, 43,352.47 and 18,666.80

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Solution

The fourth proportional to 31,418.34, 43,352.47 and 18,666.80 is: 25,757.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,418.34 : 43,352.47 = 18,666.80 : x
  2. Step 2: Convert to fraction form
    31,418.34/43,352.47 = 18,666.80/x
  3. Step 3: Cross multiply
    31,418.34x = 43,352.47 × 18,666.80
  4. Step 4: Simplify right side
    31,418.34x = 809,252,113.12
  5. Step 5: Solve for x
    x = 809,252,113.12/31,418.34
  6. Step 6: Final answer
    x = 25,757.31

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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.