Home / 18,904.62-28,343.01-6,421.28

Finding the Fourth Proportional to 18,904.62, 28,343.01 and 6,421.28

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Solution

The fourth proportional to 18,904.62, 28,343.01 and 6,421.28 is: 9,627.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.62 : 28,343.01 = 6,421.28 : x
  2. Step 2: Convert to fraction form
    18,904.62/28,343.01 = 6,421.28/x
  3. Step 3: Cross multiply
    18,904.62x = 28,343.01 × 6,421.28
  4. Step 4: Simplify right side
    18,904.62x = 181,998,403.25
  5. Step 5: Solve for x
    x = 181,998,403.25/18,904.62
  6. Step 6: Final answer
    x = 9,627.19

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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.