Home / 19,128.54-28,697.43-6,646.75

Finding the Fourth Proportional to 19,128.54, 28,697.43 and 6,646.75

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Solution

The fourth proportional to 19,128.54, 28,697.43 and 6,646.75 is: 9,971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.54 : 28,697.43 = 6,646.75 : x
  2. Step 2: Convert to fraction form
    19,128.54/28,697.43 = 6,646.75/x
  3. Step 3: Cross multiply
    19,128.54x = 28,697.43 × 6,646.75
  4. Step 4: Simplify right side
    19,128.54x = 190,744,642.85
  5. Step 5: Solve for x
    x = 190,744,642.85/19,128.54
  6. Step 6: Final answer
    x = 9,971.73

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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.