Home / 13,428.75-20,146.70-4,663.65

Finding the Fourth Proportional to 13,428.75, 20,146.70 and 4,663.65

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Solution

The fourth proportional to 13,428.75, 20,146.70 and 4,663.65 is: 6,996.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.75 : 20,146.70 = 4,663.65 : x
  2. Step 2: Convert to fraction form
    13,428.75/20,146.70 = 4,663.65/x
  3. Step 3: Cross multiply
    13,428.75x = 20,146.70 × 4,663.65
  4. Step 4: Simplify right side
    13,428.75x = 93,957,157.46
  5. Step 5: Solve for x
    x = 93,957,157.46/13,428.75
  6. Step 6: Final answer
    x = 6,996.72

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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.