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Finding the Fourth Proportional to 21,379.04, 32,069.04 and 7,338.96

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Solution

The fourth proportional to 21,379.04, 32,069.04 and 7,338.96 is: 11,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.04 : 32,069.04 = 7,338.96 : x
  2. Step 2: Convert to fraction form
    21,379.04/32,069.04 = 7,338.96/x
  3. Step 3: Cross multiply
    21,379.04x = 32,069.04 × 7,338.96
  4. Step 4: Simplify right side
    21,379.04x = 235,353,401.80
  5. Step 5: Solve for x
    x = 235,353,401.80/21,379.04
  6. Step 6: Final answer
    x = 11,008.60

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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.