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Finding the Fourth Proportional to 11,349.14, 15,648.90 and 7,990.88

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Solution

The fourth proportional to 11,349.14, 15,648.90 and 7,990.88 is: 11,018.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,349.14 : 15,648.90 = 7,990.88 : x
  2. Step 2: Convert to fraction form
    11,349.14/15,648.90 = 7,990.88/x
  3. Step 3: Cross multiply
    11,349.14x = 15,648.90 × 7,990.88
  4. Step 4: Simplify right side
    11,349.14x = 125,048,482.03
  5. Step 5: Solve for x
    x = 125,048,482.03/11,349.14
  6. Step 6: Final answer
    x = 11,018.32

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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.