Home / 13,239.92-18,246.16-12,911.87

Finding the Fourth Proportional to 13,239.92, 18,246.16 and 12,911.87

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Solution

The fourth proportional to 13,239.92, 18,246.16 and 12,911.87 is: 17,794.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.92 : 18,246.16 = 12,911.87 : x
  2. Step 2: Convert to fraction form
    13,239.92/18,246.16 = 12,911.87/x
  3. Step 3: Cross multiply
    13,239.92x = 18,246.16 × 12,911.87
  4. Step 4: Simplify right side
    13,239.92x = 235,592,107.67
  5. Step 5: Solve for x
    x = 235,592,107.67/13,239.92
  6. Step 6: Final answer
    x = 17,794.07

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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.