Home / 30,361.12-45,557.16-20,479.69

Finding the Fourth Proportional to 30,361.12, 45,557.16 and 20,479.69

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Solution

The fourth proportional to 30,361.12, 45,557.16 and 20,479.69 is: 30,729.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,361.12 : 45,557.16 = 20,479.69 : x
  2. Step 2: Convert to fraction form
    30,361.12/45,557.16 = 20,479.69/x
  3. Step 3: Cross multiply
    30,361.12x = 45,557.16 × 20,479.69
  4. Step 4: Simplify right side
    30,361.12x = 932,996,286.29
  5. Step 5: Solve for x
    x = 932,996,286.29/30,361.12
  6. Step 6: Final answer
    x = 30,729.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.