Home / 13,191.15-18,212.28-11,772.41

Finding the Fourth Proportional to 13,191.15, 18,212.28 and 11,772.41

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Solution

The fourth proportional to 13,191.15, 18,212.28 and 11,772.41 is: 16,253.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.15 : 18,212.28 = 11,772.41 : x
  2. Step 2: Convert to fraction form
    13,191.15/18,212.28 = 11,772.41/x
  3. Step 3: Cross multiply
    13,191.15x = 18,212.28 × 11,772.41
  4. Step 4: Simplify right side
    13,191.15x = 214,402,336.13
  5. Step 5: Solve for x
    x = 214,402,336.13/13,191.15
  6. Step 6: Final answer
    x = 16,253.50

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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.