Home / 11,108.79-15,320.21-7,329.33

Finding the Fourth Proportional to 11,108.79, 15,320.21 and 7,329.33

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Solution

The fourth proportional to 11,108.79, 15,320.21 and 7,329.33 is: 10,107.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.79 : 15,320.21 = 7,329.33 : x
  2. Step 2: Convert to fraction form
    11,108.79/15,320.21 = 7,329.33/x
  3. Step 3: Cross multiply
    11,108.79x = 15,320.21 × 7,329.33
  4. Step 4: Simplify right side
    11,108.79x = 112,286,838.11
  5. Step 5: Solve for x
    x = 112,286,838.11/11,108.79
  6. Step 6: Final answer
    x = 10,107.93

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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.