Home / 10,998.36-16,485.16-5,455.68

Finding the Fourth Proportional to 10,998.36, 16,485.16 and 5,455.68

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Solution

The fourth proportional to 10,998.36, 16,485.16 and 5,455.68 is: 8,177.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.36 : 16,485.16 = 5,455.68 : x
  2. Step 2: Convert to fraction form
    10,998.36/16,485.16 = 5,455.68/x
  3. Step 3: Cross multiply
    10,998.36x = 16,485.16 × 5,455.68
  4. Step 4: Simplify right side
    10,998.36x = 89,937,757.71
  5. Step 5: Solve for x
    x = 89,937,757.71/10,998.36
  6. Step 6: Final answer
    x = 8,177.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.