Home / 19,629.69-29,445.20-7,785.71

Finding the Fourth Proportional to 19,629.69, 29,445.20 and 7,785.71

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Solution

The fourth proportional to 19,629.69, 29,445.20 and 7,785.71 is: 11,678.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,629.69 : 29,445.20 = 7,785.71 : x
  2. Step 2: Convert to fraction form
    19,629.69/29,445.20 = 7,785.71/x
  3. Step 3: Cross multiply
    19,629.69x = 29,445.20 × 7,785.71
  4. Step 4: Simplify right side
    19,629.69x = 229,251,788.09
  5. Step 5: Solve for x
    x = 229,251,788.09/19,629.69
  6. Step 6: Final answer
    x = 11,678.83

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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.