Home / 12,365.40-18,548.10-11,827.80

Finding the Fourth Proportional to 12,365.40, 18,548.10 and 11,827.80

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Solution

The fourth proportional to 12,365.40, 18,548.10 and 11,827.80 is: 17,741.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.40 : 18,548.10 = 11,827.80 : x
  2. Step 2: Convert to fraction form
    12,365.40/18,548.10 = 11,827.80/x
  3. Step 3: Cross multiply
    12,365.40x = 18,548.10 × 11,827.80
  4. Step 4: Simplify right side
    12,365.40x = 219,383,217.18
  5. Step 5: Solve for x
    x = 219,383,217.18/12,365.40
  6. Step 6: Final answer
    x = 17,741.70

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Similar ratio
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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.