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Finding the Fourth Proportional to 14,503.31, 20,018.19 and 8,911.07

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Solution

The fourth proportional to 14,503.31, 20,018.19 and 8,911.07 is: 12,299.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,503.31 : 20,018.19 = 8,911.07 : x
  2. Step 2: Convert to fraction form
    14,503.31/20,018.19 = 8,911.07/x
  3. Step 3: Cross multiply
    14,503.31x = 20,018.19 × 8,911.07
  4. Step 4: Simplify right side
    14,503.31x = 178,383,347.72
  5. Step 5: Solve for x
    x = 178,383,347.72/14,503.31
  6. Step 6: Final answer
    x = 12,299.50

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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.