Home / 12,812.82-19,221.27-5,417.34

Finding the Fourth Proportional to 12,812.82, 19,221.27 and 5,417.34

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Solution

The fourth proportional to 12,812.82, 19,221.27 and 5,417.34 is: 8,126.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.82 : 19,221.27 = 5,417.34 : x
  2. Step 2: Convert to fraction form
    12,812.82/19,221.27 = 5,417.34/x
  3. Step 3: Cross multiply
    12,812.82x = 19,221.27 × 5,417.34
  4. Step 4: Simplify right side
    12,812.82x = 104,128,154.82
  5. Step 5: Solve for x
    x = 104,128,154.82/12,812.82
  6. Step 6: Final answer
    x = 8,126.87

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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.