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Finding the Fourth Proportional to 12,880.92, 17,773.65 and 7,215.24

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Solution

The fourth proportional to 12,880.92, 17,773.65 and 7,215.24 is: 9,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.92 : 17,773.65 = 7,215.24 : x
  2. Step 2: Convert to fraction form
    12,880.92/17,773.65 = 7,215.24/x
  3. Step 3: Cross multiply
    12,880.92x = 17,773.65 × 7,215.24
  4. Step 4: Simplify right side
    12,880.92x = 128,241,150.43
  5. Step 5: Solve for x
    x = 128,241,150.43/12,880.92
  6. Step 6: Final answer
    x = 9,955.90

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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.