Home / 11,885.40-17,828.10-11,712.60

Finding the Fourth Proportional to 11,885.40, 17,828.10 and 11,712.60

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Solution

The fourth proportional to 11,885.40, 17,828.10 and 11,712.60 is: 17,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,885.40 : 17,828.10 = 11,712.60 : x
  2. Step 2: Convert to fraction form
    11,885.40/17,828.10 = 11,712.60/x
  3. Step 3: Cross multiply
    11,885.40x = 17,828.10 × 11,712.60
  4. Step 4: Simplify right side
    11,885.40x = 208,813,404.06
  5. Step 5: Solve for x
    x = 208,813,404.06/11,885.40
  6. Step 6: Final answer
    x = 17,568.90

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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.