Home / 19,626.40-29,451.78-7,939.72

Finding the Fourth Proportional to 19,626.40, 29,451.78 and 7,939.72

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Solution

The fourth proportional to 19,626.40, 29,451.78 and 7,939.72 is: 11,914.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,626.40 : 29,451.78 = 7,939.72 : x
  2. Step 2: Convert to fraction form
    19,626.40/29,451.78 = 7,939.72/x
  3. Step 3: Cross multiply
    19,626.40x = 29,451.78 × 7,939.72
  4. Step 4: Simplify right side
    19,626.40x = 233,838,886.70
  5. Step 5: Solve for x
    x = 233,838,886.70/19,626.40
  6. Step 6: Final answer
    x = 11,914.51

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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.