Home / 13,716.18-18,928.89-8,342.24

Finding the Fourth Proportional to 13,716.18, 18,928.89 and 8,342.24

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Solution

The fourth proportional to 13,716.18, 18,928.89 and 8,342.24 is: 11,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716.18 : 18,928.89 = 8,342.24 : x
  2. Step 2: Convert to fraction form
    13,716.18/18,928.89 = 8,342.24/x
  3. Step 3: Cross multiply
    13,716.18x = 18,928.89 × 8,342.24
  4. Step 4: Simplify right side
    13,716.18x = 157,909,248.67
  5. Step 5: Solve for x
    x = 157,909,248.67/13,716.18
  6. Step 6: Final answer
    x = 11,512.63

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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.