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Finding the Fourth Proportional to 11,448.60, 15,800.07 and 6,412.74

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Solution

The fourth proportional to 11,448.60, 15,800.07 and 6,412.74 is: 8,850.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,448.60 : 15,800.07 = 6,412.74 : x
  2. Step 2: Convert to fraction form
    11,448.60/15,800.07 = 6,412.74/x
  3. Step 3: Cross multiply
    11,448.60x = 15,800.07 × 6,412.74
  4. Step 4: Simplify right side
    11,448.60x = 101,321,740.89
  5. Step 5: Solve for x
    x = 101,321,740.89/11,448.60
  6. Step 6: Final answer
    x = 8,850.14

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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.