Home / 10,906.38-16,285.68-8,660.01

Finding the Fourth Proportional to 10,906.38, 16,285.68 and 8,660.01

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Solution

The fourth proportional to 10,906.38, 16,285.68 and 8,660.01 is: 12,931.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,906.38 : 16,285.68 = 8,660.01 : x
  2. Step 2: Convert to fraction form
    10,906.38/16,285.68 = 8,660.01/x
  3. Step 3: Cross multiply
    10,906.38x = 16,285.68 × 8,660.01
  4. Step 4: Simplify right side
    10,906.38x = 141,034,070.23
  5. Step 5: Solve for x
    x = 141,034,070.23/10,906.38
  6. Step 6: Final answer
    x = 12,931.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.