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Finding the Fourth Proportional to 11,141.10, 15,368.97 and 7,554.85

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Solution

The fourth proportional to 11,141.10, 15,368.97 and 7,554.85 is: 10,421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,141.10 : 15,368.97 = 7,554.85 : x
  2. Step 2: Convert to fraction form
    11,141.10/15,368.97 = 7,554.85/x
  3. Step 3: Cross multiply
    11,141.10x = 15,368.97 × 7,554.85
  4. Step 4: Simplify right side
    11,141.10x = 116,110,186.16
  5. Step 5: Solve for x
    x = 116,110,186.16/11,141.10
  6. Step 6: Final answer
    x = 10,421.79

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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.