Home / 30,835.15-42,517.04-22,780.46

Finding the Fourth Proportional to 30,835.15, 42,517.04 and 22,780.46

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Solution

The fourth proportional to 30,835.15, 42,517.04 and 22,780.46 is: 31,410.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,835.15 : 42,517.04 = 22,780.46 : x
  2. Step 2: Convert to fraction form
    30,835.15/42,517.04 = 22,780.46/x
  3. Step 3: Cross multiply
    30,835.15x = 42,517.04 × 22,780.46
  4. Step 4: Simplify right side
    30,835.15x = 968,557,729.04
  5. Step 5: Solve for x
    x = 968,557,729.04/30,835.15
  6. Step 6: Final answer
    x = 31,410.83

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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.