Home / 19,640.45-29,443.21-7,158.13

Finding the Fourth Proportional to 19,640.45, 29,443.21 and 7,158.13

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Solution

The fourth proportional to 19,640.45, 29,443.21 and 7,158.13 is: 10,730.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.45 : 29,443.21 = 7,158.13 : x
  2. Step 2: Convert to fraction form
    19,640.45/29,443.21 = 7,158.13/x
  3. Step 3: Cross multiply
    19,640.45x = 29,443.21 × 7,158.13
  4. Step 4: Simplify right side
    19,640.45x = 210,758,324.80
  5. Step 5: Solve for x
    x = 210,758,324.80/19,640.45
  6. Step 6: Final answer
    x = 10,730.83

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1.5x scale

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.