Home / 14,727.24-20,322.18-8,438.76

Finding the Fourth Proportional to 14,727.24, 20,322.18 and 8,438.76

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Solution

The fourth proportional to 14,727.24, 20,322.18 and 8,438.76 is: 11,644.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,727.24 : 20,322.18 = 8,438.76 : x
  2. Step 2: Convert to fraction form
    14,727.24/20,322.18 = 8,438.76/x
  3. Step 3: Cross multiply
    14,727.24x = 20,322.18 × 8,438.76
  4. Step 4: Simplify right side
    14,727.24x = 171,493,999.70
  5. Step 5: Solve for x
    x = 171,493,999.70/14,727.24
  6. Step 6: Final answer
    x = 11,644.68

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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.