Home / 19,302.69-28,930.19-11,397.20

Finding the Fourth Proportional to 19,302.69, 28,930.19 and 11,397.20

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Solution

The fourth proportional to 19,302.69, 28,930.19 and 11,397.20 is: 17,081.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,302.69 : 28,930.19 = 11,397.20 : x
  2. Step 2: Convert to fraction form
    19,302.69/28,930.19 = 11,397.20/x
  3. Step 3: Cross multiply
    19,302.69x = 28,930.19 × 11,397.20
  4. Step 4: Simplify right side
    19,302.69x = 329,722,959.83
  5. Step 5: Solve for x
    x = 329,722,959.83/19,302.69
  6. Step 6: Final answer
    x = 17,081.71

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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.