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Finding the Fourth Proportional to 14,790.40, 20,410.92 and 8,076.10

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Solution

The fourth proportional to 14,790.40, 20,410.92 and 8,076.10 is: 11,145.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,790.40 : 20,410.92 = 8,076.10 : x
  2. Step 2: Convert to fraction form
    14,790.40/20,410.92 = 8,076.10/x
  3. Step 3: Cross multiply
    14,790.40x = 20,410.92 × 8,076.10
  4. Step 4: Simplify right side
    14,790.40x = 164,840,631.01
  5. Step 5: Solve for x
    x = 164,840,631.01/14,790.40
  6. Step 6: Final answer
    x = 11,145.11

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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.