Home / 13,871.28-20,795.52-6,472.08

Finding the Fourth Proportional to 13,871.28, 20,795.52 and 6,472.08

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Solution

The fourth proportional to 13,871.28, 20,795.52 and 6,472.08 is: 9,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.28 : 20,795.52 = 6,472.08 : x
  2. Step 2: Convert to fraction form
    13,871.28/20,795.52 = 6,472.08/x
  3. Step 3: Cross multiply
    13,871.28x = 20,795.52 × 6,472.08
  4. Step 4: Simplify right side
    13,871.28x = 134,590,269.08
  5. Step 5: Solve for x
    x = 134,590,269.08/13,871.28
  6. Step 6: Final answer
    x = 9,702.80

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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.