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Finding the Fourth Proportional to 12,325.75, 17,015.80 and 7,612.76

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Solution

The fourth proportional to 12,325.75, 17,015.80 and 7,612.76 is: 10,509.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.75 : 17,015.80 = 7,612.76 : x
  2. Step 2: Convert to fraction form
    12,325.75/17,015.80 = 7,612.76/x
  3. Step 3: Cross multiply
    12,325.75x = 17,015.80 × 7,612.76
  4. Step 4: Simplify right side
    12,325.75x = 129,537,201.61
  5. Step 5: Solve for x
    x = 129,537,201.61/12,325.75
  6. Step 6: Final answer
    x = 10,509.48

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Half scale
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Double scale
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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.