Home / 13,458.71-20,188.79-4,099.03

Finding the Fourth Proportional to 13,458.71, 20,188.79 and 4,099.03

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Solution

The fourth proportional to 13,458.71, 20,188.79 and 4,099.03 is: 6,148.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.71 : 20,188.79 = 4,099.03 : x
  2. Step 2: Convert to fraction form
    13,458.71/20,188.79 = 4,099.03/x
  3. Step 3: Cross multiply
    13,458.71x = 20,188.79 × 4,099.03
  4. Step 4: Simplify right side
    13,458.71x = 82,754,455.87
  5. Step 5: Solve for x
    x = 82,754,455.87/13,458.71
  6. Step 6: Final answer
    x = 6,148.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.