Home / 31,692.78-43,732.98-18,943.43

Finding the Fourth Proportional to 31,692.78, 43,732.98 and 18,943.43

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Solution

The fourth proportional to 31,692.78, 43,732.98 and 18,943.43 is: 26,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,692.78 : 43,732.98 = 18,943.43 : x
  2. Step 2: Convert to fraction form
    31,692.78/43,732.98 = 18,943.43/x
  3. Step 3: Cross multiply
    31,692.78x = 43,732.98 × 18,943.43
  4. Step 4: Simplify right side
    31,692.78x = 828,452,426.66
  5. Step 5: Solve for x
    x = 828,452,426.66/31,692.78
  6. Step 6: Final answer
    x = 26,140.10

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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.