Home / 31,025.70-42,815.79-16,878.51

Finding the Fourth Proportional to 31,025.70, 42,815.79 and 16,878.51

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Solution

The fourth proportional to 31,025.70, 42,815.79 and 16,878.51 is: 23,292.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,025.70 : 42,815.79 = 16,878.51 : x
  2. Step 2: Convert to fraction form
    31,025.70/42,815.79 = 16,878.51/x
  3. Step 3: Cross multiply
    31,025.70x = 42,815.79 × 16,878.51
  4. Step 4: Simplify right side
    31,025.70x = 722,666,739.67
  5. Step 5: Solve for x
    x = 722,666,739.67/31,025.70
  6. Step 6: Final answer
    x = 23,292.52

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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.