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Finding the Fourth Proportional to 11,374.08, 15,699.20 and 7,406.08

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Solution

The fourth proportional to 11,374.08, 15,699.20 and 7,406.08 is: 10,222.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,374.08 : 15,699.20 = 7,406.08 : x
  2. Step 2: Convert to fraction form
    11,374.08/15,699.20 = 7,406.08/x
  3. Step 3: Cross multiply
    11,374.08x = 15,699.20 × 7,406.08
  4. Step 4: Simplify right side
    11,374.08x = 116,269,531.14
  5. Step 5: Solve for x
    x = 116,269,531.14/11,374.08
  6. Step 6: Final answer
    x = 10,222.32

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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.