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Finding the Fourth Proportional to 18,221.74, 27,347.46 and 9,459.16

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Solution

The fourth proportional to 18,221.74, 27,347.46 and 9,459.16 is: 14,196.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.74 : 27,347.46 = 9,459.16 : x
  2. Step 2: Convert to fraction form
    18,221.74/27,347.46 = 9,459.16/x
  3. Step 3: Cross multiply
    18,221.74x = 27,347.46 × 9,459.16
  4. Step 4: Simplify right side
    18,221.74x = 258,683,999.73
  5. Step 5: Solve for x
    x = 258,683,999.73/18,221.74
  6. Step 6: Final answer
    x = 14,196.45

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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.