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Finding the Fourth Proportional to 12,877.08, 17,770.44 and 7,212.02

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Solution

The fourth proportional to 12,877.08, 17,770.44 and 7,212.02 is: 9,952.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,877.08 : 17,770.44 = 7,212.02 : x
  2. Step 2: Convert to fraction form
    12,877.08/17,770.44 = 7,212.02/x
  3. Step 3: Cross multiply
    12,877.08x = 17,770.44 × 7,212.02
  4. Step 4: Simplify right side
    12,877.08x = 128,160,679.84
  5. Step 5: Solve for x
    x = 128,160,679.84/12,877.08
  6. Step 6: Final answer
    x = 9,952.62

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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.