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Finding the Fourth Proportional to 13,385.52, 20,063.52 and 8,457.36

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Solution

The fourth proportional to 13,385.52, 20,063.52 and 8,457.36 is: 12,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.52 : 20,063.52 = 8,457.36 : x
  2. Step 2: Convert to fraction form
    13,385.52/20,063.52 = 8,457.36/x
  3. Step 3: Cross multiply
    13,385.52x = 20,063.52 × 8,457.36
  4. Step 4: Simplify right side
    13,385.52x = 169,684,411.51
  5. Step 5: Solve for x
    x = 169,684,411.51/13,385.52
  6. Step 6: Final answer
    x = 12,676.71

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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.