Home / 15,719.79-23,574.68-5,187.85

Finding the Fourth Proportional to 15,719.79, 23,574.68 and 5,187.85

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Solution

The fourth proportional to 15,719.79, 23,574.68 and 5,187.85 is: 7,780.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.79 : 23,574.68 = 5,187.85 : x
  2. Step 2: Convert to fraction form
    15,719.79/23,574.68 = 5,187.85/x
  3. Step 3: Cross multiply
    15,719.79x = 23,574.68 × 5,187.85
  4. Step 4: Simplify right side
    15,719.79x = 122,301,903.64
  5. Step 5: Solve for x
    x = 122,301,903.64/15,719.79
  6. Step 6: Final answer
    x = 7,780.12

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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.