Home / 30,278.68-41,779.92-18,942.70

Finding the Fourth Proportional to 30,278.68, 41,779.92 and 18,942.70

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Solution

The fourth proportional to 30,278.68, 41,779.92 and 18,942.70 is: 26,138.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.68 : 41,779.92 = 18,942.70 : x
  2. Step 2: Convert to fraction form
    30,278.68/41,779.92 = 18,942.70/x
  3. Step 3: Cross multiply
    30,278.68x = 41,779.92 × 18,942.70
  4. Step 4: Simplify right side
    30,278.68x = 791,424,490.58
  5. Step 5: Solve for x
    x = 791,424,490.58/30,278.68
  6. Step 6: Final answer
    x = 26,138.01

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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.