Home / 13,141.50-18,135.27-9,787.20

Finding the Fourth Proportional to 13,141.50, 18,135.27 and 9,787.20

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Solution

The fourth proportional to 13,141.50, 18,135.27 and 9,787.20 is: 13,506.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.50 : 18,135.27 = 9,787.20 : x
  2. Step 2: Convert to fraction form
    13,141.50/18,135.27 = 9,787.20/x
  3. Step 3: Cross multiply
    13,141.50x = 18,135.27 × 9,787.20
  4. Step 4: Simplify right side
    13,141.50x = 177,493,514.54
  5. Step 5: Solve for x
    x = 177,493,514.54/13,141.50
  6. Step 6: Final answer
    x = 13,506.34

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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.