Home / 30,381.15-41,920.95-20,293.41

Finding the Fourth Proportional to 30,381.15, 41,920.95 and 20,293.41

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Solution

The fourth proportional to 30,381.15, 41,920.95 and 20,293.41 is: 28,001.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,381.15 : 41,920.95 = 20,293.41 : x
  2. Step 2: Convert to fraction form
    30,381.15/41,920.95 = 20,293.41/x
  3. Step 3: Cross multiply
    30,381.15x = 41,920.95 × 20,293.41
  4. Step 4: Simplify right side
    30,381.15x = 850,719,025.94
  5. Step 5: Solve for x
    x = 850,719,025.94/30,381.15
  6. Step 6: Final answer
    x = 28,001.54

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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.