Home / 11,142.36-15,370.70-7,556.10

Finding the Fourth Proportional to 11,142.36, 15,370.70 and 7,556.10

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Solution

The fourth proportional to 11,142.36, 15,370.70 and 7,556.10 is: 10,423.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,142.36 : 15,370.70 = 7,556.10 : x
  2. Step 2: Convert to fraction form
    11,142.36/15,370.70 = 7,556.10/x
  3. Step 3: Cross multiply
    11,142.36x = 15,370.70 × 7,556.10
  4. Step 4: Simplify right side
    11,142.36x = 116,142,508.49
  5. Step 5: Solve for x
    x = 116,142,508.49/11,142.36
  6. Step 6: Final answer
    x = 10,423.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.