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Finding the Fourth Proportional to 12,360.45, 17,057.45 and 6,695.21

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Solution

The fourth proportional to 12,360.45, 17,057.45 and 6,695.21 is: 9,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,360.45 : 17,057.45 = 6,695.21 : x
  2. Step 2: Convert to fraction form
    12,360.45/17,057.45 = 6,695.21/x
  3. Step 3: Cross multiply
    12,360.45x = 17,057.45 × 6,695.21
  4. Step 4: Simplify right side
    12,360.45x = 114,203,091.05
  5. Step 5: Solve for x
    x = 114,203,091.05/12,360.45
  6. Step 6: Final answer
    x = 9,239.40

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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.