Home / 20,656.90-30,997.32-8,810.04

Finding the Fourth Proportional to 20,656.90, 30,997.32 and 8,810.04

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Solution

The fourth proportional to 20,656.90, 30,997.32 and 8,810.04 is: 13,220.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.90 : 30,997.32 = 8,810.04 : x
  2. Step 2: Convert to fraction form
    20,656.90/30,997.32 = 8,810.04/x
  3. Step 3: Cross multiply
    20,656.90x = 30,997.32 × 8,810.04
  4. Step 4: Simplify right side
    20,656.90x = 273,087,629.09
  5. Step 5: Solve for x
    x = 273,087,629.09/20,656.90
  6. Step 6: Final answer
    x = 13,220.17

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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.