Home / 12,947.01-19,407.04-8,787.36

Finding the Fourth Proportional to 12,947.01, 19,407.04 and 8,787.36

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Solution

The fourth proportional to 12,947.01, 19,407.04 and 8,787.36 is: 13,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.01 : 19,407.04 = 8,787.36 : x
  2. Step 2: Convert to fraction form
    12,947.01/19,407.04 = 8,787.36/x
  3. Step 3: Cross multiply
    12,947.01x = 19,407.04 × 8,787.36
  4. Step 4: Simplify right side
    12,947.01x = 170,536,647.01
  5. Step 5: Solve for x
    x = 170,536,647.01/12,947.01
  6. Step 6: Final answer
    x = 13,171.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.