Home / 13,269.23-18,311.39-7,219.65

Finding the Fourth Proportional to 13,269.23, 18,311.39 and 7,219.65

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Solution

The fourth proportional to 13,269.23, 18,311.39 and 7,219.65 is: 9,963.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.23 : 18,311.39 = 7,219.65 : x
  2. Step 2: Convert to fraction form
    13,269.23/18,311.39 = 7,219.65/x
  3. Step 3: Cross multiply
    13,269.23x = 18,311.39 × 7,219.65
  4. Step 4: Simplify right side
    13,269.23x = 132,201,826.81
  5. Step 5: Solve for x
    x = 132,201,826.81/13,269.23
  6. Step 6: Final answer
    x = 9,963.04

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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.