Home / 13,311.08-18,369.29-7,342.74

Finding the Fourth Proportional to 13,311.08, 18,369.29 and 7,342.74

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Solution

The fourth proportional to 13,311.08, 18,369.29 and 7,342.74 is: 10,132.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.08 : 18,369.29 = 7,342.74 : x
  2. Step 2: Convert to fraction form
    13,311.08/18,369.29 = 7,342.74/x
  3. Step 3: Cross multiply
    13,311.08x = 18,369.29 × 7,342.74
  4. Step 4: Simplify right side
    13,311.08x = 134,880,993.08
  5. Step 5: Solve for x
    x = 134,880,993.08/13,311.08
  6. Step 6: Final answer
    x = 10,132.99

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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.