Home / 30,380.56-41,894.52-20,309.04

Finding the Fourth Proportional to 30,380.56, 41,894.52 and 20,309.04

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Solution

The fourth proportional to 30,380.56, 41,894.52 and 20,309.04 is: 28,005.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,380.56 : 41,894.52 = 20,309.04 : x
  2. Step 2: Convert to fraction form
    30,380.56/41,894.52 = 20,309.04/x
  3. Step 3: Cross multiply
    30,380.56x = 41,894.52 × 20,309.04
  4. Step 4: Simplify right side
    30,380.56x = 850,837,482.46
  5. Step 5: Solve for x
    x = 850,837,482.46/30,380.56
  6. Step 6: Final answer
    x = 28,005.98

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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.