Home / 19,768.80-29,664.15-8,090.22

Finding the Fourth Proportional to 19,768.80, 29,664.15 and 8,090.22

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Solution

The fourth proportional to 19,768.80, 29,664.15 and 8,090.22 is: 12,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,768.80 : 29,664.15 = 8,090.22 : x
  2. Step 2: Convert to fraction form
    19,768.80/29,664.15 = 8,090.22/x
  3. Step 3: Cross multiply
    19,768.80x = 29,664.15 × 8,090.22
  4. Step 4: Simplify right side
    19,768.80x = 239,989,459.16
  5. Step 5: Solve for x
    x = 239,989,459.16/19,768.80
  6. Step 6: Final answer
    x = 12,139.81

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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.