Home / 30,982.96-42,780.64-19,051.68

Finding the Fourth Proportional to 30,982.96, 42,780.64 and 19,051.68

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Solution

The fourth proportional to 30,982.96, 42,780.64 and 19,051.68 is: 26,306.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,982.96 : 42,780.64 = 19,051.68 : x
  2. Step 2: Convert to fraction form
    30,982.96/42,780.64 = 19,051.68/x
  3. Step 3: Cross multiply
    30,982.96x = 42,780.64 × 19,051.68
  4. Step 4: Simplify right side
    30,982.96x = 815,043,063.48
  5. Step 5: Solve for x
    x = 815,043,063.48/30,982.96
  6. Step 6: Final answer
    x = 26,306.17

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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.