Home / 31,029.12-42,820.48-18,451.44

Finding the Fourth Proportional to 31,029.12, 42,820.48 and 18,451.44

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Solution

The fourth proportional to 31,029.12, 42,820.48 and 18,451.44 is: 25,463.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,029.12 : 42,820.48 = 18,451.44 : x
  2. Step 2: Convert to fraction form
    31,029.12/42,820.48 = 18,451.44/x
  3. Step 3: Cross multiply
    31,029.12x = 42,820.48 × 18,451.44
  4. Step 4: Simplify right side
    31,029.12x = 790,099,517.49
  5. Step 5: Solve for x
    x = 790,099,517.49/31,029.12
  6. Step 6: Final answer
    x = 25,463.16

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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.