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Finding the Fourth Proportional to 14,390.87, 21,589.38 and 8,153.87

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Solution

The fourth proportional to 14,390.87, 21,589.38 and 8,153.87 is: 12,232.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,390.87 : 21,589.38 = 8,153.87 : x
  2. Step 2: Convert to fraction form
    14,390.87/21,589.38 = 8,153.87/x
  3. Step 3: Cross multiply
    14,390.87x = 21,589.38 × 8,153.87
  4. Step 4: Simplify right side
    14,390.87x = 176,036,889.95
  5. Step 5: Solve for x
    x = 176,036,889.95/14,390.87
  6. Step 6: Final answer
    x = 12,232.54

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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.