Home / 35,487.11-48,973.30-20,382.80

Finding the Fourth Proportional to 35,487.11, 48,973.30 and 20,382.80

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Solution

The fourth proportional to 35,487.11, 48,973.30 and 20,382.80 is: 28,128.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,487.11 : 48,973.30 = 20,382.80 : x
  2. Step 2: Convert to fraction form
    35,487.11/48,973.30 = 20,382.80/x
  3. Step 3: Cross multiply
    35,487.11x = 48,973.30 × 20,382.80
  4. Step 4: Simplify right side
    35,487.11x = 998,212,832.57
  5. Step 5: Solve for x
    x = 998,212,832.57/35,487.11
  6. Step 6: Final answer
    x = 28,128.89

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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.