Home / 35,120.85-48,462.80-20,781.12

Finding the Fourth Proportional to 35,120.85, 48,462.80 and 20,781.12

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Solution

The fourth proportional to 35,120.85, 48,462.80 and 20,781.12 is: 28,675.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,120.85 : 48,462.80 = 20,781.12 : x
  2. Step 2: Convert to fraction form
    35,120.85/48,462.80 = 20,781.12/x
  3. Step 3: Cross multiply
    35,120.85x = 48,462.80 × 20,781.12
  4. Step 4: Simplify right side
    35,120.85x = 1,007,111,158.43
  5. Step 5: Solve for x
    x = 1,007,111,158.43/35,120.85
  6. Step 6: Final answer
    x = 28,675.59

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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.