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Finding the Fourth Proportional to 13,379.17, 20,068.95 and 6,359.90

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Solution

The fourth proportional to 13,379.17, 20,068.95 and 6,359.90 is: 9,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.17 : 20,068.95 = 6,359.90 : x
  2. Step 2: Convert to fraction form
    13,379.17/20,068.95 = 6,359.90/x
  3. Step 3: Cross multiply
    13,379.17x = 20,068.95 × 6,359.90
  4. Step 4: Simplify right side
    13,379.17x = 127,636,515.11
  5. Step 5: Solve for x
    x = 127,636,515.11/13,379.17
  6. Step 6: Final answer
    x = 9,539.94

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1.5x scale

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.