Home / 13,985.67-20,979.45-4,751.67

Finding the Fourth Proportional to 13,985.67, 20,979.45 and 4,751.67

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Solution

The fourth proportional to 13,985.67, 20,979.45 and 4,751.67 is: 7,127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.67 : 20,979.45 = 4,751.67 : x
  2. Step 2: Convert to fraction form
    13,985.67/20,979.45 = 4,751.67/x
  3. Step 3: Cross multiply
    13,985.67x = 20,979.45 × 4,751.67
  4. Step 4: Simplify right side
    13,985.67x = 99,687,423.18
  5. Step 5: Solve for x
    x = 99,687,423.18/13,985.67
  6. Step 6: Final answer
    x = 7,127.83

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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.