Home / 18,590.28-25,671.20-13,866.36

Finding the Fourth Proportional to 18,590.28, 25,671.20 and 13,866.36

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Solution

The fourth proportional to 18,590.28, 25,671.20 and 13,866.36 is: 19,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,590.28 : 25,671.20 = 13,866.36 : x
  2. Step 2: Convert to fraction form
    18,590.28/25,671.20 = 13,866.36/x
  3. Step 3: Cross multiply
    18,590.28x = 25,671.20 × 13,866.36
  4. Step 4: Simplify right side
    18,590.28x = 355,966,100.83
  5. Step 5: Solve for x
    x = 355,966,100.83/18,590.28
  6. Step 6: Final answer
    x = 19,147.97

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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.