Home / 13,691.07-18,894.20-7,722.41

Finding the Fourth Proportional to 13,691.07, 18,894.20 and 7,722.41

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Solution

The fourth proportional to 13,691.07, 18,894.20 and 7,722.41 is: 10,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.07 : 18,894.20 = 7,722.41 : x
  2. Step 2: Convert to fraction form
    13,691.07/18,894.20 = 7,722.41/x
  3. Step 3: Cross multiply
    13,691.07x = 18,894.20 × 7,722.41
  4. Step 4: Simplify right side
    13,691.07x = 145,908,625.94
  5. Step 5: Solve for x
    x = 145,908,625.94/13,691.07
  6. Step 6: Final answer
    x = 10,657.21

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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.