Home / 30,800.49-42,486.33-19,449.96

Finding the Fourth Proportional to 30,800.49, 42,486.33 and 19,449.96

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Solution

The fourth proportional to 30,800.49, 42,486.33 and 19,449.96 is: 26,829.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.49 : 42,486.33 = 19,449.96 : x
  2. Step 2: Convert to fraction form
    30,800.49/42,486.33 = 19,449.96/x
  3. Step 3: Cross multiply
    30,800.49x = 42,486.33 × 19,449.96
  4. Step 4: Simplify right side
    30,800.49x = 826,357,321.80
  5. Step 5: Solve for x
    x = 826,357,321.80/30,800.49
  6. Step 6: Final answer
    x = 26,829.36

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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.