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Finding the Fourth Proportional to 14,215.66, 19,617.87 and 7,927.36

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Solution

The fourth proportional to 14,215.66, 19,617.87 and 7,927.36 is: 10,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.66 : 19,617.87 = 7,927.36 : x
  2. Step 2: Convert to fraction form
    14,215.66/19,617.87 = 7,927.36/x
  3. Step 3: Cross multiply
    14,215.66x = 19,617.87 × 7,927.36
  4. Step 4: Simplify right side
    14,215.66x = 155,517,917.92
  5. Step 5: Solve for x
    x = 155,517,917.92/14,215.66
  6. Step 6: Final answer
    x = 10,939.90

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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.