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Finding the Fourth Proportional to 14,752.70, 20,358.02 and 8,378.45

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Solution

The fourth proportional to 14,752.70, 20,358.02 and 8,378.45 is: 11,561.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,752.70 : 20,358.02 = 8,378.45 : x
  2. Step 2: Convert to fraction form
    14,752.70/20,358.02 = 8,378.45/x
  3. Step 3: Cross multiply
    14,752.70x = 20,358.02 × 8,378.45
  4. Step 4: Simplify right side
    14,752.70x = 170,568,652.67
  5. Step 5: Solve for x
    x = 170,568,652.67/14,752.70
  6. Step 6: Final answer
    x = 11,561.86

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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.