Home / 20,787.93-31,184.98-7,639.27

Finding the Fourth Proportional to 20,787.93, 31,184.98 and 7,639.27

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Solution

The fourth proportional to 20,787.93, 31,184.98 and 7,639.27 is: 11,460.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.93 : 31,184.98 = 7,639.27 : x
  2. Step 2: Convert to fraction form
    20,787.93/31,184.98 = 7,639.27/x
  3. Step 3: Cross multiply
    20,787.93x = 31,184.98 × 7,639.27
  4. Step 4: Simplify right side
    20,787.93x = 238,230,482.16
  5. Step 5: Solve for x
    x = 238,230,482.16/20,787.93
  6. Step 6: Final answer
    x = 11,460.04

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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.