Home / 35,520.80-49,016.88-20,411.12

Finding the Fourth Proportional to 35,520.80, 49,016.88 and 20,411.12

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Solution

The fourth proportional to 35,520.80, 49,016.88 and 20,411.12 is: 28,166.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,520.80 : 49,016.88 = 20,411.12 : x
  2. Step 2: Convert to fraction form
    35,520.80/49,016.88 = 20,411.12/x
  3. Step 3: Cross multiply
    35,520.80x = 49,016.88 × 20,411.12
  4. Step 4: Simplify right side
    35,520.80x = 1,000,489,419.71
  5. Step 5: Solve for x
    x = 1,000,489,419.71/35,520.80
  6. Step 6: Final answer
    x = 28,166.30

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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.