Home / 11,180.10-15,431.06-7,403.40

Finding the Fourth Proportional to 11,180.10, 15,431.06 and 7,403.40

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Solution

The fourth proportional to 11,180.10, 15,431.06 and 7,403.40 is: 10,218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,180.10 : 15,431.06 = 7,403.40 : x
  2. Step 2: Convert to fraction form
    11,180.10/15,431.06 = 7,403.40/x
  3. Step 3: Cross multiply
    11,180.10x = 15,431.06 × 7,403.40
  4. Step 4: Simplify right side
    11,180.10x = 114,242,309.60
  5. Step 5: Solve for x
    x = 114,242,309.60/11,180.10
  6. Step 6: Final answer
    x = 10,218.36

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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.