Home / 15,811.54-23,720.70-4,719.10

Finding the Fourth Proportional to 15,811.54, 23,720.70 and 4,719.10

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Solution

The fourth proportional to 15,811.54, 23,720.70 and 4,719.10 is: 7,079.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.54 : 23,720.70 = 4,719.10 : x
  2. Step 2: Convert to fraction form
    15,811.54/23,720.70 = 4,719.10/x
  3. Step 3: Cross multiply
    15,811.54x = 23,720.70 × 4,719.10
  4. Step 4: Simplify right side
    15,811.54x = 111,940,355.37
  5. Step 5: Solve for x
    x = 111,940,355.37/15,811.54
  6. Step 6: Final answer
    x = 7,079.66

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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.