Home / 11,135.93-15,358.05-7,943.15

Finding the Fourth Proportional to 11,135.93, 15,358.05 and 7,943.15

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Solution

The fourth proportional to 11,135.93, 15,358.05 and 7,943.15 is: 10,954.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.93 : 15,358.05 = 7,943.15 : x
  2. Step 2: Convert to fraction form
    11,135.93/15,358.05 = 7,943.15/x
  3. Step 3: Cross multiply
    11,135.93x = 15,358.05 × 7,943.15
  4. Step 4: Simplify right side
    11,135.93x = 121,991,294.86
  5. Step 5: Solve for x
    x = 121,991,294.86/11,135.93
  6. Step 6: Final answer
    x = 10,954.75

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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.