Home / 19,719.21-29,583-5,679.12

Finding the Fourth Proportional to 19,719.21, 29,583 and 5,679.12

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Solution

The fourth proportional to 19,719.21, 29,583 and 5,679.12 is: 8,519.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.21 : 29,583 = 5,679.12 : x
  2. Step 2: Convert to fraction form
    19,719.21/29,583 = 5,679.12/x
  3. Step 3: Cross multiply
    19,719.21x = 29,583 × 5,679.12
  4. Step 4: Simplify right side
    19,719.21x = 168,005,406.96
  5. Step 5: Solve for x
    x = 168,005,406.96/19,719.21
  6. Step 6: Final answer
    x = 8,519.89

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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.