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Finding the Fourth Proportional to 12,251.68, 16,913.04 and 7,214.28

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Solution

The fourth proportional to 12,251.68, 16,913.04 and 7,214.28 is: 9,959.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,251.68 : 16,913.04 = 7,214.28 : x
  2. Step 2: Convert to fraction form
    12,251.68/16,913.04 = 7,214.28/x
  3. Step 3: Cross multiply
    12,251.68x = 16,913.04 × 7,214.28
  4. Step 4: Simplify right side
    12,251.68x = 122,015,406.21
  5. Step 5: Solve for x
    x = 122,015,406.21/12,251.68
  6. Step 6: Final answer
    x = 9,959.08

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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.