Home / 10,128.36-15,186.98-3,553.94

Finding the Fourth Proportional to 10,128.36, 15,186.98 and 3,553.94

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Solution

The fourth proportional to 10,128.36, 15,186.98 and 3,553.94 is: 5,328.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.36 : 15,186.98 = 3,553.94 : x
  2. Step 2: Convert to fraction form
    10,128.36/15,186.98 = 3,553.94/x
  3. Step 3: Cross multiply
    10,128.36x = 15,186.98 × 3,553.94
  4. Step 4: Simplify right side
    10,128.36x = 53,973,615.70
  5. Step 5: Solve for x
    x = 53,973,615.70/10,128.36
  6. Step 6: Final answer
    x = 5,328.96

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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.