Home / 13,384.13-20,061.69-5,978.39

Finding the Fourth Proportional to 13,384.13, 20,061.69 and 5,978.39

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Solution

The fourth proportional to 13,384.13, 20,061.69 and 5,978.39 is: 8,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.13 : 20,061.69 = 5,978.39 : x
  2. Step 2: Convert to fraction form
    13,384.13/20,061.69 = 5,978.39/x
  3. Step 3: Cross multiply
    13,384.13x = 20,061.69 × 5,978.39
  4. Step 4: Simplify right side
    13,384.13x = 119,936,506.57
  5. Step 5: Solve for x
    x = 119,936,506.57/13,384.13
  6. Step 6: Final answer
    x = 8,961.10

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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.