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Finding the Fourth Proportional to 12,218.32, 16,856.88 and 6,913.08

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Solution

The fourth proportional to 12,218.32, 16,856.88 and 6,913.08 is: 9,537.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.32 : 16,856.88 = 6,913.08 : x
  2. Step 2: Convert to fraction form
    12,218.32/16,856.88 = 6,913.08/x
  3. Step 3: Cross multiply
    12,218.32x = 16,856.88 × 6,913.08
  4. Step 4: Simplify right side
    12,218.32x = 116,532,959.99
  5. Step 5: Solve for x
    x = 116,532,959.99/12,218.32
  6. Step 6: Final answer
    x = 9,537.56

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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.