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Finding the Fourth Proportional to 13,787.81, 19,016.13 and 9,007.39

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Solution

The fourth proportional to 13,787.81, 19,016.13 and 9,007.39 is: 12,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.81 : 19,016.13 = 9,007.39 : x
  2. Step 2: Convert to fraction form
    13,787.81/19,016.13 = 9,007.39/x
  3. Step 3: Cross multiply
    13,787.81x = 19,016.13 × 9,007.39
  4. Step 4: Simplify right side
    13,787.81x = 171,285,699.20
  5. Step 5: Solve for x
    x = 171,285,699.20/13,787.81
  6. Step 6: Final answer
    x = 12,422.98

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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.