Home / 13,716.55-18,928.82-8,340.74

Finding the Fourth Proportional to 13,716.55, 18,928.82 and 8,340.74

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Solution

The fourth proportional to 13,716.55, 18,928.82 and 8,340.74 is: 11,510.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716.55 : 18,928.82 = 8,340.74 : x
  2. Step 2: Convert to fraction form
    13,716.55/18,928.82 = 8,340.74/x
  3. Step 3: Cross multiply
    13,716.55x = 18,928.82 × 8,340.74
  4. Step 4: Simplify right side
    13,716.55x = 157,880,363.32
  5. Step 5: Solve for x
    x = 157,880,363.32/13,716.55
  6. Step 6: Final answer
    x = 11,510.21

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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.