Home / 13,828.84-20,731.50-6,437.58

Finding the Fourth Proportional to 13,828.84, 20,731.50 and 6,437.58

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Solution

The fourth proportional to 13,828.84, 20,731.50 and 6,437.58 is: 9,650.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.84 : 20,731.50 = 6,437.58 : x
  2. Step 2: Convert to fraction form
    13,828.84/20,731.50 = 6,437.58/x
  3. Step 3: Cross multiply
    13,828.84x = 20,731.50 × 6,437.58
  4. Step 4: Simplify right side
    13,828.84x = 133,460,689.77
  5. Step 5: Solve for x
    x = 133,460,689.77/13,828.84
  6. Step 6: Final answer
    x = 9,650.90

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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.