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Finding the Fourth Proportional to 13,688.34, 18,888.18 and 8,025

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Solution

The fourth proportional to 13,688.34, 18,888.18 and 8,025 is: 11,073.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.34 : 18,888.18 = 8,025 : x
  2. Step 2: Convert to fraction form
    13,688.34/18,888.18 = 8,025/x
  3. Step 3: Cross multiply
    13,688.34x = 18,888.18 × 8,025
  4. Step 4: Simplify right side
    13,688.34x = 151,577,644.50
  5. Step 5: Solve for x
    x = 151,577,644.50/13,688.34
  6. Step 6: Final answer
    x = 11,073.49

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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.