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Finding the Fourth Proportional to 19,379.68, 29,068.95 and 5,340.55

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Solution

The fourth proportional to 19,379.68, 29,068.95 and 5,340.55 is: 8,010.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,379.68 : 29,068.95 = 5,340.55 : x
  2. Step 2: Convert to fraction form
    19,379.68/29,068.95 = 5,340.55/x
  3. Step 3: Cross multiply
    19,379.68x = 29,068.95 × 5,340.55
  4. Step 4: Simplify right side
    19,379.68x = 155,244,203.73
  5. Step 5: Solve for x
    x = 155,244,203.73/19,379.68
  6. Step 6: Final answer
    x = 8,010.67

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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.