Home / 13,889.30-20,809.68-11,564.24

Finding the Fourth Proportional to 13,889.30, 20,809.68 and 11,564.24

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Solution

The fourth proportional to 13,889.30, 20,809.68 and 11,564.24 is: 17,326.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.30 : 20,809.68 = 11,564.24 : x
  2. Step 2: Convert to fraction form
    13,889.30/20,809.68 = 11,564.24/x
  3. Step 3: Cross multiply
    13,889.30x = 20,809.68 × 11,564.24
  4. Step 4: Simplify right side
    13,889.30x = 240,648,029.79
  5. Step 5: Solve for x
    x = 240,648,029.79/13,889.30
  6. Step 6: Final answer
    x = 17,326.15

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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.