Home / 13,719.10-20,586.28-6,699.21

Finding the Fourth Proportional to 13,719.10, 20,586.28 and 6,699.21

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Solution

The fourth proportional to 13,719.10, 20,586.28 and 6,699.21 is: 10,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.10 : 20,586.28 = 6,699.21 : x
  2. Step 2: Convert to fraction form
    13,719.10/20,586.28 = 6,699.21/x
  3. Step 3: Cross multiply
    13,719.10x = 20,586.28 × 6,699.21
  4. Step 4: Simplify right side
    13,719.10x = 137,911,812.84
  5. Step 5: Solve for x
    x = 137,911,812.84/13,719.10
  6. Step 6: Final answer
    x = 10,052.54

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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.