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Finding the Fourth Proportional to 11,436, 15,770.88 and 7,460.16

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Solution

The fourth proportional to 11,436, 15,770.88 and 7,460.16 is: 10,287.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436 : 15,770.88 = 7,460.16 : x
  2. Step 2: Convert to fraction form
    11,436/15,770.88 = 7,460.16/x
  3. Step 3: Cross multiply
    11,436x = 15,770.88 × 7,460.16
  4. Step 4: Simplify right side
    11,436x = 117,653,288.14
  5. Step 5: Solve for x
    x = 117,653,288.14/11,436
  6. Step 6: Final answer
    x = 10,287.98

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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.