Home / 22,728.40-34,090.20-7,145.20

Finding the Fourth Proportional to 22,728.40, 34,090.20 and 7,145.20

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Solution

The fourth proportional to 22,728.40, 34,090.20 and 7,145.20 is: 10,717.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,728.40 : 34,090.20 = 7,145.20 : x
  2. Step 2: Convert to fraction form
    22,728.40/34,090.20 = 7,145.20/x
  3. Step 3: Cross multiply
    22,728.40x = 34,090.20 × 7,145.20
  4. Step 4: Simplify right side
    22,728.40x = 243,581,297.04
  5. Step 5: Solve for x
    x = 243,581,297.04/22,728.40
  6. Step 6: Final answer
    x = 10,717.05

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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.