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Finding the Fourth Proportional to 15,582.44, 21,503.64 and 8,508.86

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Solution

The fourth proportional to 15,582.44, 21,503.64 and 8,508.86 is: 11,742.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,582.44 : 21,503.64 = 8,508.86 : x
  2. Step 2: Convert to fraction form
    15,582.44/21,503.64 = 8,508.86/x
  3. Step 3: Cross multiply
    15,582.44x = 21,503.64 × 8,508.86
  4. Step 4: Simplify right side
    15,582.44x = 182,971,462.25
  5. Step 5: Solve for x
    x = 182,971,462.25/15,582.44
  6. Step 6: Final answer
    x = 11,742.16

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