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Finding the Fourth Proportional to 14,871.74, 20,515.22 and 8,818.46

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Solution

The fourth proportional to 14,871.74, 20,515.22 and 8,818.46 is: 12,164.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,871.74 : 20,515.22 = 8,818.46 : x
  2. Step 2: Convert to fraction form
    14,871.74/20,515.22 = 8,818.46/x
  3. Step 3: Cross multiply
    14,871.74x = 20,515.22 × 8,818.46
  4. Step 4: Simplify right side
    14,871.74x = 180,912,500.29
  5. Step 5: Solve for x
    x = 180,912,500.29/14,871.74
  6. Step 6: Final answer
    x = 12,164.86

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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.