Home / 31,016.97-42,803.37-18,917.51

Finding the Fourth Proportional to 31,016.97, 42,803.37 and 18,917.51

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Solution

The fourth proportional to 31,016.97, 42,803.37 and 18,917.51 is: 26,106.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,016.97 : 42,803.37 = 18,917.51 : x
  2. Step 2: Convert to fraction form
    31,016.97/42,803.37 = 18,917.51/x
  3. Step 3: Cross multiply
    31,016.97x = 42,803.37 × 18,917.51
  4. Step 4: Simplify right side
    31,016.97x = 809,732,965.99
  5. Step 5: Solve for x
    x = 809,732,965.99/31,016.97
  6. Step 6: Final answer
    x = 26,106.13

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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.