Home / 30,934.35-42,689.49-18,997.56

Finding the Fourth Proportional to 30,934.35, 42,689.49 and 18,997.56

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Solution

The fourth proportional to 30,934.35, 42,689.49 and 18,997.56 is: 26,216.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.35 : 42,689.49 = 18,997.56 : x
  2. Step 2: Convert to fraction form
    30,934.35/42,689.49 = 18,997.56/x
  3. Step 3: Cross multiply
    30,934.35x = 42,689.49 × 18,997.56
  4. Step 4: Simplify right side
    30,934.35x = 810,996,147.64
  5. Step 5: Solve for x
    x = 810,996,147.64/30,934.35
  6. Step 6: Final answer
    x = 26,216.69

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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.