Home / 31,161.30-46,742.01-7,787.74

Finding the Fourth Proportional to 31,161.30, 46,742.01 and 7,787.74

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Solution

The fourth proportional to 31,161.30, 46,742.01 and 7,787.74 is: 11,681.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,161.30 : 46,742.01 = 7,787.74 : x
  2. Step 2: Convert to fraction form
    31,161.30/46,742.01 = 7,787.74/x
  3. Step 3: Cross multiply
    31,161.30x = 46,742.01 × 7,787.74
  4. Step 4: Simplify right side
    31,161.30x = 364,014,620.96
  5. Step 5: Solve for x
    x = 364,014,620.96/31,161.30
  6. Step 6: Final answer
    x = 11,681.62

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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.