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Finding the Fourth Proportional to 14,325.78, 21,479.14 and 7,308.34

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Solution

The fourth proportional to 14,325.78, 21,479.14 and 7,308.34 is: 10,957.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,325.78 : 21,479.14 = 7,308.34 : x
  2. Step 2: Convert to fraction form
    14,325.78/21,479.14 = 7,308.34/x
  3. Step 3: Cross multiply
    14,325.78x = 21,479.14 × 7,308.34
  4. Step 4: Simplify right side
    14,325.78x = 156,976,858.03
  5. Step 5: Solve for x
    x = 156,976,858.03/14,325.78
  6. Step 6: Final answer
    x = 10,957.65

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1.5x scale

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.