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Finding the Fourth Proportional to 12,107.61, 16,710.10 and 6,802.72

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Solution

The fourth proportional to 12,107.61, 16,710.10 and 6,802.72 is: 9,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.61 : 16,710.10 = 6,802.72 : x
  2. Step 2: Convert to fraction form
    12,107.61/16,710.10 = 6,802.72/x
  3. Step 3: Cross multiply
    12,107.61x = 16,710.10 × 6,802.72
  4. Step 4: Simplify right side
    12,107.61x = 113,674,072.69
  5. Step 5: Solve for x
    x = 113,674,072.69/12,107.61
  6. Step 6: Final answer
    x = 9,388.65

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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.