Home / 11,128.87-16,700.10-6,458.05

Finding the Fourth Proportional to 11,128.87, 16,700.10 and 6,458.05

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Solution

The fourth proportional to 11,128.87, 16,700.10 and 6,458.05 is: 9,691.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.87 : 16,700.10 = 6,458.05 : x
  2. Step 2: Convert to fraction form
    11,128.87/16,700.10 = 6,458.05/x
  3. Step 3: Cross multiply
    11,128.87x = 16,700.10 × 6,458.05
  4. Step 4: Simplify right side
    11,128.87x = 107,850,080.81
  5. Step 5: Solve for x
    x = 107,850,080.81/11,128.87
  6. Step 6: Final answer
    x = 9,691.02

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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.