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Finding the Fourth Proportional to 14,879.50, 20,535.93 and 8,912.63

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Solution

The fourth proportional to 14,879.50, 20,535.93 and 8,912.63 is: 12,300.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,879.50 : 20,535.93 = 8,912.63 : x
  2. Step 2: Convert to fraction form
    14,879.50/20,535.93 = 8,912.63/x
  3. Step 3: Cross multiply
    14,879.50x = 20,535.93 × 8,912.63
  4. Step 4: Simplify right side
    14,879.50x = 183,029,197.14
  5. Step 5: Solve for x
    x = 183,029,197.14/14,879.50
  6. Step 6: Final answer
    x = 12,300.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.