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Finding the Fourth Proportional to 14,803.92, 20,429.88 and 8,090.18

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Solution

The fourth proportional to 14,803.92, 20,429.88 and 8,090.18 is: 11,164.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,803.92 : 20,429.88 = 8,090.18 : x
  2. Step 2: Convert to fraction form
    14,803.92/20,429.88 = 8,090.18/x
  3. Step 3: Cross multiply
    14,803.92x = 20,429.88 × 8,090.18
  4. Step 4: Simplify right side
    14,803.92x = 165,281,406.58
  5. Step 5: Solve for x
    x = 165,281,406.58/14,803.92
  6. Step 6: Final answer
    x = 11,164.71

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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.