Home / 13,347.55-18,420.26-7,379.11

Finding the Fourth Proportional to 13,347.55, 18,420.26 and 7,379.11

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Solution

The fourth proportional to 13,347.55, 18,420.26 and 7,379.11 is: 10,183.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.55 : 18,420.26 = 7,379.11 : x
  2. Step 2: Convert to fraction form
    13,347.55/18,420.26 = 7,379.11/x
  3. Step 3: Cross multiply
    13,347.55x = 18,420.26 × 7,379.11
  4. Step 4: Simplify right side
    13,347.55x = 135,925,069.49
  5. Step 5: Solve for x
    x = 135,925,069.49/13,347.55
  6. Step 6: Final answer
    x = 10,183.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.