Home / 30,807.05-42,520.53-20,033.19

Finding the Fourth Proportional to 30,807.05, 42,520.53 and 20,033.19

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Solution

The fourth proportional to 30,807.05, 42,520.53 and 20,033.19 is: 27,650.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.05 : 42,520.53 = 20,033.19 : x
  2. Step 2: Convert to fraction form
    30,807.05/42,520.53 = 20,033.19/x
  3. Step 3: Cross multiply
    30,807.05x = 42,520.53 × 20,033.19
  4. Step 4: Simplify right side
    30,807.05x = 851,821,856.39
  5. Step 5: Solve for x
    x = 851,821,856.39/30,807.05
  6. Step 6: Final answer
    x = 27,650.22

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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.