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Finding the Fourth Proportional to 13,789, 19,032.06 and 8,203.24

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Solution

The fourth proportional to 13,789, 19,032.06 and 8,203.24 is: 11,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789 : 19,032.06 = 8,203.24 : x
  2. Step 2: Convert to fraction form
    13,789/19,032.06 = 8,203.24/x
  3. Step 3: Cross multiply
    13,789x = 19,032.06 × 8,203.24
  4. Step 4: Simplify right side
    13,789x = 156,124,555.87
  5. Step 5: Solve for x
    x = 156,124,555.87/13,789
  6. Step 6: Final answer
    x = 11,322.40

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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.