Home / 28,668.69-43,032.20-20,358.09

Finding the Fourth Proportional to 28,668.69, 43,032.20 and 20,358.09

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Solution

The fourth proportional to 28,668.69, 43,032.20 and 20,358.09 is: 30,557.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,668.69 : 43,032.20 = 20,358.09 : x
  2. Step 2: Convert to fraction form
    28,668.69/43,032.20 = 20,358.09/x
  3. Step 3: Cross multiply
    28,668.69x = 43,032.20 × 20,358.09
  4. Step 4: Simplify right side
    28,668.69x = 876,053,298.71
  5. Step 5: Solve for x
    x = 876,053,298.71/28,668.69
  6. Step 6: Final answer
    x = 30,557.84

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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.