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Finding the Fourth Proportional to 10,665.71, 14,718.54 and 6,190.22

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Solution

The fourth proportional to 10,665.71, 14,718.54 and 6,190.22 is: 8,542.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,665.71 : 14,718.54 = 6,190.22 : x
  2. Step 2: Convert to fraction form
    10,665.71/14,718.54 = 6,190.22/x
  3. Step 3: Cross multiply
    10,665.71x = 14,718.54 × 6,190.22
  4. Step 4: Simplify right side
    10,665.71x = 91,111,000.68
  5. Step 5: Solve for x
    x = 91,111,000.68/10,665.71
  6. Step 6: Final answer
    x = 8,542.42

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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.