Home / 20,835.97-31,238.29-6,787.63

Finding the Fourth Proportional to 20,835.97, 31,238.29 and 6,787.63

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Solution

The fourth proportional to 20,835.97, 31,238.29 and 6,787.63 is: 10,176.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.97 : 31,238.29 = 6,787.63 : x
  2. Step 2: Convert to fraction form
    20,835.97/31,238.29 = 6,787.63/x
  3. Step 3: Cross multiply
    20,835.97x = 31,238.29 × 6,787.63
  4. Step 4: Simplify right side
    20,835.97x = 212,034,001.89
  5. Step 5: Solve for x
    x = 212,034,001.89/20,835.97
  6. Step 6: Final answer
    x = 10,176.35

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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.