Home / 13,716.13-18,928.28-7,428.50

Finding the Fourth Proportional to 13,716.13, 18,928.28 and 7,428.50

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Solution

The fourth proportional to 13,716.13, 18,928.28 and 7,428.50 is: 10,251.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716.13 : 18,928.28 = 7,428.50 : x
  2. Step 2: Convert to fraction form
    13,716.13/18,928.28 = 7,428.50/x
  3. Step 3: Cross multiply
    13,716.13x = 18,928.28 × 7,428.50
  4. Step 4: Simplify right side
    13,716.13x = 140,608,727.98
  5. Step 5: Solve for x
    x = 140,608,727.98/13,716.13
  6. Step 6: Final answer
    x = 10,251.34

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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.