Home / 13,929.41-19,211.85-9,680.42

Finding the Fourth Proportional to 13,929.41, 19,211.85 and 9,680.42

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Solution

The fourth proportional to 13,929.41, 19,211.85 and 9,680.42 is: 13,351.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.41 : 19,211.85 = 9,680.42 : x
  2. Step 2: Convert to fraction form
    13,929.41/19,211.85 = 9,680.42/x
  3. Step 3: Cross multiply
    13,929.41x = 19,211.85 × 9,680.42
  4. Step 4: Simplify right side
    13,929.41x = 185,978,680.92
  5. Step 5: Solve for x
    x = 185,978,680.92/13,929.41
  6. Step 6: Final answer
    x = 13,351.52

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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.