Home / 12,749.81-19,132.20-5,353.70

Finding the Fourth Proportional to 12,749.81, 19,132.20 and 5,353.70

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Solution

The fourth proportional to 12,749.81, 19,132.20 and 5,353.70 is: 8,033.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.81 : 19,132.20 = 5,353.70 : x
  2. Step 2: Convert to fraction form
    12,749.81/19,132.20 = 5,353.70/x
  3. Step 3: Cross multiply
    12,749.81x = 19,132.20 × 5,353.70
  4. Step 4: Simplify right side
    12,749.81x = 102,428,059.14
  5. Step 5: Solve for x
    x = 102,428,059.14/12,749.81
  6. Step 6: Final answer
    x = 8,033.69

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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.