Home / 31,025.58-42,815.05-16,878.43

Finding the Fourth Proportional to 31,025.58, 42,815.05 and 16,878.43

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Solution

The fourth proportional to 31,025.58, 42,815.05 and 16,878.43 is: 23,292.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,025.58 : 42,815.05 = 16,878.43 : x
  2. Step 2: Convert to fraction form
    31,025.58/42,815.05 = 16,878.43/x
  3. Step 3: Cross multiply
    31,025.58x = 42,815.05 × 16,878.43
  4. Step 4: Simplify right side
    31,025.58x = 722,650,824.37
  5. Step 5: Solve for x
    x = 722,650,824.37/31,025.58
  6. Step 6: Final answer
    x = 23,292.10

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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.