Home / 20,930.70-28,883.05-19,258.86

Finding the Fourth Proportional to 20,930.70, 28,883.05 and 19,258.86

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Solution

The fourth proportional to 20,930.70, 28,883.05 and 19,258.86 is: 26,576.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.70 : 28,883.05 = 19,258.86 : x
  2. Step 2: Convert to fraction form
    20,930.70/28,883.05 = 19,258.86/x
  3. Step 3: Cross multiply
    20,930.70x = 28,883.05 × 19,258.86
  4. Step 4: Simplify right side
    20,930.70x = 556,254,616.32
  5. Step 5: Solve for x
    x = 556,254,616.32/20,930.70
  6. Step 6: Final answer
    x = 26,576.02

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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.