Home / 30,361.18-45,557.25-20,479.75

Finding the Fourth Proportional to 30,361.18, 45,557.25 and 20,479.75

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Solution

The fourth proportional to 30,361.18, 45,557.25 and 20,479.75 is: 30,730.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,361.18 : 45,557.25 = 20,479.75 : x
  2. Step 2: Convert to fraction form
    30,361.18/45,557.25 = 20,479.75/x
  3. Step 3: Cross multiply
    30,361.18x = 45,557.25 × 20,479.75
  4. Step 4: Simplify right side
    30,361.18x = 933,001,053.59
  5. Step 5: Solve for x
    x = 933,001,053.59/30,361.18
  6. Step 6: Final answer
    x = 30,730.07

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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.