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Finding the Fourth Proportional to 12,612.72, 17,405.44 and 7,307.40

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Solution

The fourth proportional to 12,612.72, 17,405.44 and 7,307.40 is: 10,084.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.72 : 17,405.44 = 7,307.40 : x
  2. Step 2: Convert to fraction form
    12,612.72/17,405.44 = 7,307.40/x
  3. Step 3: Cross multiply
    12,612.72x = 17,405.44 × 7,307.40
  4. Step 4: Simplify right side
    12,612.72x = 127,188,512.26
  5. Step 5: Solve for x
    x = 127,188,512.26/12,612.72
  6. Step 6: Final answer
    x = 10,084.15

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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.