Home / 12,212.52-18,316.56-3,445.36

Finding the Fourth Proportional to 12,212.52, 18,316.56 and 3,445.36

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Solution

The fourth proportional to 12,212.52, 18,316.56 and 3,445.36 is: 5,167.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.52 : 18,316.56 = 3,445.36 : x
  2. Step 2: Convert to fraction form
    12,212.52/18,316.56 = 3,445.36/x
  3. Step 3: Cross multiply
    12,212.52x = 18,316.56 × 3,445.36
  4. Step 4: Simplify right side
    12,212.52x = 63,107,143.16
  5. Step 5: Solve for x
    x = 63,107,143.16/12,212.52
  6. Step 6: Final answer
    x = 5,167.41

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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.