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Finding the Fourth Proportional to 14,356.56, 19,805.40 and 8,388.48

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Solution

The fourth proportional to 14,356.56, 19,805.40 and 8,388.48 is: 11,572.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,356.56 : 19,805.40 = 8,388.48 : x
  2. Step 2: Convert to fraction form
    14,356.56/19,805.40 = 8,388.48/x
  3. Step 3: Cross multiply
    14,356.56x = 19,805.40 × 8,388.48
  4. Step 4: Simplify right side
    14,356.56x = 166,137,201.79
  5. Step 5: Solve for x
    x = 166,137,201.79/14,356.56
  6. Step 6: Final answer
    x = 11,572.22

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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.