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Finding the Fourth Proportional to 13,056.64, 18,018.18 and 7,467.64

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Solution

The fourth proportional to 13,056.64, 18,018.18 and 7,467.64 is: 10,305.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.64 : 18,018.18 = 7,467.64 : x
  2. Step 2: Convert to fraction form
    13,056.64/18,018.18 = 7,467.64/x
  3. Step 3: Cross multiply
    13,056.64x = 18,018.18 × 7,467.64
  4. Step 4: Simplify right side
    13,056.64x = 134,553,281.70
  5. Step 5: Solve for x
    x = 134,553,281.70/13,056.64
  6. Step 6: Final answer
    x = 10,305.35

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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.