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Finding the Fourth Proportional to 14,385.87, 21,580.92 and 7,369.85

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Solution

The fourth proportional to 14,385.87, 21,580.92 and 7,369.85 is: 11,055.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,385.87 : 21,580.92 = 7,369.85 : x
  2. Step 2: Convert to fraction form
    14,385.87/21,580.92 = 7,369.85/x
  3. Step 3: Cross multiply
    14,385.87x = 21,580.92 × 7,369.85
  4. Step 4: Simplify right side
    14,385.87x = 159,048,035.36
  5. Step 5: Solve for x
    x = 159,048,035.36/14,385.87
  6. Step 6: Final answer
    x = 11,055.85

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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.