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Finding the Fourth Proportional to 12,108.90, 16,710.07 and 7,393.18

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Solution

The fourth proportional to 12,108.90, 16,710.07 and 7,393.18 is: 10,202.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.90 : 16,710.07 = 7,393.18 : x
  2. Step 2: Convert to fraction form
    12,108.90/16,710.07 = 7,393.18/x
  3. Step 3: Cross multiply
    12,108.90x = 16,710.07 × 7,393.18
  4. Step 4: Simplify right side
    12,108.90x = 123,540,495.06
  5. Step 5: Solve for x
    x = 123,540,495.06/12,108.90
  6. Step 6: Final answer
    x = 10,202.45

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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.