Home / 13,291.54-18,341.85-8,580.58

Finding the Fourth Proportional to 13,291.54, 18,341.85 and 8,580.58

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Solution

The fourth proportional to 13,291.54, 18,341.85 and 8,580.58 is: 11,840.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.54 : 18,341.85 = 8,580.58 : x
  2. Step 2: Convert to fraction form
    13,291.54/18,341.85 = 8,580.58/x
  3. Step 3: Cross multiply
    13,291.54x = 18,341.85 × 8,580.58
  4. Step 4: Simplify right side
    13,291.54x = 157,383,711.27
  5. Step 5: Solve for x
    x = 157,383,711.27/13,291.54
  6. Step 6: Final answer
    x = 11,840.89

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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.