Home / 13,031.45-19,550.81-5,129.09

Finding the Fourth Proportional to 13,031.45, 19,550.81 and 5,129.09

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Solution

The fourth proportional to 13,031.45, 19,550.81 and 5,129.09 is: 7,695.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,031.45 : 19,550.81 = 5,129.09 : x
  2. Step 2: Convert to fraction form
    13,031.45/19,550.81 = 5,129.09/x
  3. Step 3: Cross multiply
    13,031.45x = 19,550.81 × 5,129.09
  4. Step 4: Simplify right side
    13,031.45x = 100,277,852.45
  5. Step 5: Solve for x
    x = 100,277,852.45/13,031.45
  6. Step 6: Final answer
    x = 7,695.07

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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.