Home / 31,026.84-42,815.78-16,879.74

Finding the Fourth Proportional to 31,026.84, 42,815.78 and 16,879.74

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Solution

The fourth proportional to 31,026.84, 42,815.78 and 16,879.74 is: 23,293.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,026.84 : 42,815.78 = 16,879.74 : x
  2. Step 2: Convert to fraction form
    31,026.84/42,815.78 = 16,879.74/x
  3. Step 3: Cross multiply
    31,026.84x = 42,815.78 × 16,879.74
  4. Step 4: Simplify right side
    31,026.84x = 722,719,234.30
  5. Step 5: Solve for x
    x = 722,719,234.30/31,026.84
  6. Step 6: Final answer
    x = 23,293.36

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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.