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Finding the Fourth Proportional to 14,601.75, 20,150.42 and 7,977.75

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Solution

The fourth proportional to 14,601.75, 20,150.42 and 7,977.75 is: 11,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,601.75 : 20,150.42 = 7,977.75 : x
  2. Step 2: Convert to fraction form
    14,601.75/20,150.42 = 7,977.75/x
  3. Step 3: Cross multiply
    14,601.75x = 20,150.42 × 7,977.75
  4. Step 4: Simplify right side
    14,601.75x = 160,754,973.27
  5. Step 5: Solve for x
    x = 160,754,973.27/14,601.75
  6. Step 6: Final answer
    x = 11,009.30

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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.