Home / 18,787.37-28,180.17-7,691.31

Finding the Fourth Proportional to 18,787.37, 28,180.17 and 7,691.31

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Solution

The fourth proportional to 18,787.37, 28,180.17 and 7,691.31 is: 11,536.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.37 : 28,180.17 = 7,691.31 : x
  2. Step 2: Convert to fraction form
    18,787.37/28,180.17 = 7,691.31/x
  3. Step 3: Cross multiply
    18,787.37x = 28,180.17 × 7,691.31
  4. Step 4: Simplify right side
    18,787.37x = 216,742,423.32
  5. Step 5: Solve for x
    x = 216,742,423.32/18,787.37
  6. Step 6: Final answer
    x = 11,536.61

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1.5x scale

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.