Home / 10,117.36-15,179.60-5,189.32

Finding the Fourth Proportional to 10,117.36, 15,179.60 and 5,189.32

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Solution

The fourth proportional to 10,117.36, 15,179.60 and 5,189.32 is: 7,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.36 : 15,179.60 = 5,189.32 : x
  2. Step 2: Convert to fraction form
    10,117.36/15,179.60 = 5,189.32/x
  3. Step 3: Cross multiply
    10,117.36x = 15,179.60 × 5,189.32
  4. Step 4: Simplify right side
    10,117.36x = 78,771,801.87
  5. Step 5: Solve for x
    x = 78,771,801.87/10,117.36
  6. Step 6: Final answer
    x = 7,785.81

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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.