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Finding the Fourth Proportional to 14,711.22, 20,303.22 and 8,742.90

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Solution

The fourth proportional to 14,711.22, 20,303.22 and 8,742.90 is: 12,066.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,711.22 : 20,303.22 = 8,742.90 : x
  2. Step 2: Convert to fraction form
    14,711.22/20,303.22 = 8,742.90/x
  3. Step 3: Cross multiply
    14,711.22x = 20,303.22 × 8,742.90
  4. Step 4: Simplify right side
    14,711.22x = 177,509,131.06
  5. Step 5: Solve for x
    x = 177,509,131.06/14,711.22
  6. Step 6: Final answer
    x = 12,066.24

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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.