Home / 20,172.16-30,261.48-7,028.32

Finding the Fourth Proportional to 20,172.16, 30,261.48 and 7,028.32

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Solution

The fourth proportional to 20,172.16, 30,261.48 and 7,028.32 is: 10,543.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.16 : 30,261.48 = 7,028.32 : x
  2. Step 2: Convert to fraction form
    20,172.16/30,261.48 = 7,028.32/x
  3. Step 3: Cross multiply
    20,172.16x = 30,261.48 × 7,028.32
  4. Step 4: Simplify right side
    20,172.16x = 212,687,365.11
  5. Step 5: Solve for x
    x = 212,687,365.11/20,172.16
  6. Step 6: Final answer
    x = 10,543.61

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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.