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Finding the Fourth Proportional to 13,642.76, 20,451.02 and 4,276.23

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Solution

The fourth proportional to 13,642.76, 20,451.02 and 4,276.23 is: 6,410.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.76 : 20,451.02 = 4,276.23 : x
  2. Step 2: Convert to fraction form
    13,642.76/20,451.02 = 4,276.23/x
  3. Step 3: Cross multiply
    13,642.76x = 20,451.02 × 4,276.23
  4. Step 4: Simplify right side
    13,642.76x = 87,453,167.18
  5. Step 5: Solve for x
    x = 87,453,167.18/13,642.76
  6. Step 6: Final answer
    x = 6,410.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.