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Finding the Fourth Proportional to 10,885.58, 15,004.73 and 8,582.21

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Solution

The fourth proportional to 10,885.58, 15,004.73 and 8,582.21 is: 11,829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.58 : 15,004.73 = 8,582.21 : x
  2. Step 2: Convert to fraction form
    10,885.58/15,004.73 = 8,582.21/x
  3. Step 3: Cross multiply
    10,885.58x = 15,004.73 × 8,582.21
  4. Step 4: Simplify right side
    10,885.58x = 128,773,625.92
  5. Step 5: Solve for x
    x = 128,773,625.92/10,885.58
  6. Step 6: Final answer
    x = 11,829.75

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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.