Home / 20,930.20-28,882.36-19,258.36

Finding the Fourth Proportional to 20,930.20, 28,882.36 and 19,258.36

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Solution

The fourth proportional to 20,930.20, 28,882.36 and 19,258.36 is: 26,575.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.20 : 28,882.36 = 19,258.36 : x
  2. Step 2: Convert to fraction form
    20,930.20/28,882.36 = 19,258.36/x
  3. Step 3: Cross multiply
    20,930.20x = 28,882.36 × 19,258.36
  4. Step 4: Simplify right side
    20,930.20x = 556,226,886.53
  5. Step 5: Solve for x
    x = 556,226,886.53/20,930.20
  6. Step 6: Final answer
    x = 26,575.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.