Home / 55,656.12-83,516.94-20,620.20

Finding the Fourth Proportional to 55,656.12, 83,516.94 and 20,620.20

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Solution

The fourth proportional to 55,656.12, 83,516.94 and 20,620.20 is: 30,942.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,656.12 : 83,516.94 = 20,620.20 : x
  2. Step 2: Convert to fraction form
    55,656.12/83,516.94 = 20,620.20/x
  3. Step 3: Cross multiply
    55,656.12x = 83,516.94 × 20,620.20
  4. Step 4: Simplify right side
    55,656.12x = 1,722,136,006.19
  5. Step 5: Solve for x
    x = 1,722,136,006.19/55,656.12
  6. Step 6: Final answer
    x = 30,942.44

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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.