Home / 10,812.51-16,220.36-3,415.29

Finding the Fourth Proportional to 10,812.51, 16,220.36 and 3,415.29

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Solution

The fourth proportional to 10,812.51, 16,220.36 and 3,415.29 is: 5,123.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.51 : 16,220.36 = 3,415.29 : x
  2. Step 2: Convert to fraction form
    10,812.51/16,220.36 = 3,415.29/x
  3. Step 3: Cross multiply
    10,812.51x = 16,220.36 × 3,415.29
  4. Step 4: Simplify right side
    10,812.51x = 55,397,233.30
  5. Step 5: Solve for x
    x = 55,397,233.30/10,812.51
  6. Step 6: Final answer
    x = 5,123.44

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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.