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Finding the Fourth Proportional to 11,009.10, 15,441.90 and 11,009.10

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Solution

The fourth proportional to 11,009.10, 15,441.90 and 11,009.10 is: 15,441.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,009.10 : 15,441.90 = 11,009.10 : x
  2. Step 2: Convert to fraction form
    11,009.10/15,441.90 = 11,009.10/x
  3. Step 3: Cross multiply
    11,009.10x = 15,441.90 × 11,009.10
  4. Step 4: Simplify right side
    11,009.10x = 170,001,421.29
  5. Step 5: Solve for x
    x = 170,001,421.29/11,009.10
  6. Step 6: Final answer
    x = 15,441.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.