Home / 11,519.60-17,279.40-8,603.60

Finding the Fourth Proportional to 11,519.60, 17,279.40 and 8,603.60

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Solution

The fourth proportional to 11,519.60, 17,279.40 and 8,603.60 is: 12,905.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,519.60 : 17,279.40 = 8,603.60 : x
  2. Step 2: Convert to fraction form
    11,519.60/17,279.40 = 8,603.60/x
  3. Step 3: Cross multiply
    11,519.60x = 17,279.40 × 8,603.60
  4. Step 4: Simplify right side
    11,519.60x = 148,665,045.84
  5. Step 5: Solve for x
    x = 148,665,045.84/11,519.60
  6. Step 6: Final answer
    x = 12,905.40

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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.