Home / 15,638.60-21,581.62-8,564.96

Finding the Fourth Proportional to 15,638.60, 21,581.62 and 8,564.96

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Solution

The fourth proportional to 15,638.60, 21,581.62 and 8,564.96 is: 11,819.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.60 : 21,581.62 = 8,564.96 : x
  2. Step 2: Convert to fraction form
    15,638.60/21,581.62 = 8,564.96/x
  3. Step 3: Cross multiply
    15,638.60x = 21,581.62 × 8,564.96
  4. Step 4: Simplify right side
    15,638.60x = 184,845,582.71
  5. Step 5: Solve for x
    x = 184,845,582.71/15,638.60
  6. Step 6: Final answer
    x = 11,819.83

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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.