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Finding the Fourth Proportional to 18,457.86, 27,686.63 and 4,606.86

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Solution

The fourth proportional to 18,457.86, 27,686.63 and 4,606.86 is: 6,910.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.86 : 27,686.63 = 4,606.86 : x
  2. Step 2: Convert to fraction form
    18,457.86/27,686.63 = 4,606.86/x
  3. Step 3: Cross multiply
    18,457.86x = 27,686.63 × 4,606.86
  4. Step 4: Simplify right side
    18,457.86x = 127,548,405.25
  5. Step 5: Solve for x
    x = 127,548,405.25/18,457.86
  6. Step 6: Final answer
    x = 6,910.25

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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.