Home / 30,309.48-41,833.88-19,680.66

Finding the Fourth Proportional to 30,309.48, 41,833.88 and 19,680.66

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Solution

The fourth proportional to 30,309.48, 41,833.88 and 19,680.66 is: 27,163.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,309.48 : 41,833.88 = 19,680.66 : x
  2. Step 2: Convert to fraction form
    30,309.48/41,833.88 = 19,680.66/x
  3. Step 3: Cross multiply
    30,309.48x = 41,833.88 × 19,680.66
  4. Step 4: Simplify right side
    30,309.48x = 823,318,368.76
  5. Step 5: Solve for x
    x = 823,318,368.76/30,309.48
  6. Step 6: Final answer
    x = 27,163.72

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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.