Home / 15,719.36-23,579.76-5,190.30

Finding the Fourth Proportional to 15,719.36, 23,579.76 and 5,190.30

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Solution

The fourth proportional to 15,719.36, 23,579.76 and 5,190.30 is: 7,785.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.36 : 23,579.76 = 5,190.30 : x
  2. Step 2: Convert to fraction form
    15,719.36/23,579.76 = 5,190.30/x
  3. Step 3: Cross multiply
    15,719.36x = 23,579.76 × 5,190.30
  4. Step 4: Simplify right side
    15,719.36x = 122,386,028.33
  5. Step 5: Solve for x
    x = 122,386,028.33/15,719.36
  6. Step 6: Final answer
    x = 7,785.69

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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.