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Finding the Fourth Proportional to 10,664.49, 14,710.64 and 6,678.68

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Solution

The fourth proportional to 10,664.49, 14,710.64 and 6,678.68 is: 9,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,664.49 : 14,710.64 = 6,678.68 : x
  2. Step 2: Convert to fraction form
    10,664.49/14,710.64 = 6,678.68/x
  3. Step 3: Cross multiply
    10,664.49x = 14,710.64 × 6,678.68
  4. Step 4: Simplify right side
    10,664.49x = 98,247,657.16
  5. Step 5: Solve for x
    x = 98,247,657.16/10,664.49
  6. Step 6: Final answer
    x = 9,212.60

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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.