Home / 13,219.63-18,243.60-7,251.55

Finding the Fourth Proportional to 13,219.63, 18,243.60 and 7,251.55

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Solution

The fourth proportional to 13,219.63, 18,243.60 and 7,251.55 is: 10,007.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.63 : 18,243.60 = 7,251.55 : x
  2. Step 2: Convert to fraction form
    13,219.63/18,243.60 = 7,251.55/x
  3. Step 3: Cross multiply
    13,219.63x = 18,243.60 × 7,251.55
  4. Step 4: Simplify right side
    13,219.63x = 132,294,377.58
  5. Step 5: Solve for x
    x = 132,294,377.58/13,219.63
  6. Step 6: Final answer
    x = 10,007.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.