Home / 12,421.14-18,643.42-4,531.28

Finding the Fourth Proportional to 12,421.14, 18,643.42 and 4,531.28

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Solution

The fourth proportional to 12,421.14, 18,643.42 and 4,531.28 is: 6,801.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.14 : 18,643.42 = 4,531.28 : x
  2. Step 2: Convert to fraction form
    12,421.14/18,643.42 = 4,531.28/x
  3. Step 3: Cross multiply
    12,421.14x = 18,643.42 × 4,531.28
  4. Step 4: Simplify right side
    12,421.14x = 84,478,556.18
  5. Step 5: Solve for x
    x = 84,478,556.18/12,421.14
  6. Step 6: Final answer
    x = 6,801.19

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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.