Home / 13,716.30-18,928.50-7,428.67

Finding the Fourth Proportional to 13,716.30, 18,928.50 and 7,428.67

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Solution

The fourth proportional to 13,716.30, 18,928.50 and 7,428.67 is: 10,251.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716.30 : 18,928.50 = 7,428.67 : x
  2. Step 2: Convert to fraction form
    13,716.30/18,928.50 = 7,428.67/x
  3. Step 3: Cross multiply
    13,716.30x = 18,928.50 × 7,428.67
  4. Step 4: Simplify right side
    13,716.30x = 140,613,580.10
  5. Step 5: Solve for x
    x = 140,613,580.10/13,716.30
  6. Step 6: Final answer
    x = 10,251.57

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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.