Home / 30,331.75-45,461.33-19,806.82

Finding the Fourth Proportional to 30,331.75, 45,461.33 and 19,806.82

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Solution

The fourth proportional to 30,331.75, 45,461.33 and 19,806.82 is: 29,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,331.75 : 45,461.33 = 19,806.82 : x
  2. Step 2: Convert to fraction form
    30,331.75/45,461.33 = 19,806.82/x
  3. Step 3: Cross multiply
    30,331.75x = 45,461.33 × 19,806.82
  4. Step 4: Simplify right side
    30,331.75x = 900,444,380.27
  5. Step 5: Solve for x
    x = 900,444,380.27/30,331.75
  6. Step 6: Final answer
    x = 29,686.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.