Home / 31,187.68-43,026.76-19,230.25

Finding the Fourth Proportional to 31,187.68, 43,026.76 and 19,230.25

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Solution

The fourth proportional to 31,187.68, 43,026.76 and 19,230.25 is: 26,530.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,187.68 : 43,026.76 = 19,230.25 : x
  2. Step 2: Convert to fraction form
    31,187.68/43,026.76 = 19,230.25/x
  3. Step 3: Cross multiply
    31,187.68x = 43,026.76 × 19,230.25
  4. Step 4: Simplify right side
    31,187.68x = 827,415,351.49
  5. Step 5: Solve for x
    x = 827,415,351.49/31,187.68
  6. Step 6: Final answer
    x = 26,530.20

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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.