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Finding the Fourth Proportional to 11,225, 15,490.54 and 6,751.32

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Solution

The fourth proportional to 11,225, 15,490.54 and 6,751.32 is: 9,316.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,225 : 15,490.54 = 6,751.32 : x
  2. Step 2: Convert to fraction form
    11,225/15,490.54 = 6,751.32/x
  3. Step 3: Cross multiply
    11,225x = 15,490.54 × 6,751.32
  4. Step 4: Simplify right side
    11,225x = 104,581,592.51
  5. Step 5: Solve for x
    x = 104,581,592.51/11,225
  6. Step 6: Final answer
    x = 9,316.85

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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.