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Finding the Fourth Proportional to 18,415.72, 27,600.54 and 9,646.12

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Solution

The fourth proportional to 18,415.72, 27,600.54 and 9,646.12 is: 14,457.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.72 : 27,600.54 = 9,646.12 : x
  2. Step 2: Convert to fraction form
    18,415.72/27,600.54 = 9,646.12/x
  3. Step 3: Cross multiply
    18,415.72x = 27,600.54 × 9,646.12
  4. Step 4: Simplify right side
    18,415.72x = 266,238,120.90
  5. Step 5: Solve for x
    x = 266,238,120.90/18,415.72
  6. Step 6: Final answer
    x = 14,457.11

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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.