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Finding the Fourth Proportional to 18,457.64, 27,687.42 and 4,606.76

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Solution

The fourth proportional to 18,457.64, 27,687.42 and 4,606.76 is: 6,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.64 : 27,687.42 = 4,606.76 : x
  2. Step 2: Convert to fraction form
    18,457.64/27,687.42 = 4,606.76/x
  3. Step 3: Cross multiply
    18,457.64x = 27,687.42 × 4,606.76
  4. Step 4: Simplify right side
    18,457.64x = 127,549,298.96
  5. Step 5: Solve for x
    x = 127,549,298.96/18,457.64
  6. Step 6: Final answer
    x = 6,910.38

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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.