Home / 13,751.55-20,619.57-4,389.36

Finding the Fourth Proportional to 13,751.55, 20,619.57 and 4,389.36

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Solution

The fourth proportional to 13,751.55, 20,619.57 and 4,389.36 is: 6,581.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.55 : 20,619.57 = 4,389.36 : x
  2. Step 2: Convert to fraction form
    13,751.55/20,619.57 = 4,389.36/x
  3. Step 3: Cross multiply
    13,751.55x = 20,619.57 × 4,389.36
  4. Step 4: Simplify right side
    13,751.55x = 90,506,715.78
  5. Step 5: Solve for x
    x = 90,506,715.78/13,751.55
  6. Step 6: Final answer
    x = 6,581.56

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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.