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Finding the Fourth Proportional to 14,495.52, 21,715.62 and 7,815.45

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Solution

The fourth proportional to 14,495.52, 21,715.62 and 7,815.45 is: 11,708.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,495.52 : 21,715.62 = 7,815.45 : x
  2. Step 2: Convert to fraction form
    14,495.52/21,715.62 = 7,815.45/x
  3. Step 3: Cross multiply
    14,495.52x = 21,715.62 × 7,815.45
  4. Step 4: Simplify right side
    14,495.52x = 169,717,342.33
  5. Step 5: Solve for x
    x = 169,717,342.33/14,495.52
  6. Step 6: Final answer
    x = 11,708.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.