Home / 11,928.30-17,885.50-7,984.06

Finding the Fourth Proportional to 11,928.30, 17,885.50 and 7,984.06

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Solution

The fourth proportional to 11,928.30, 17,885.50 and 7,984.06 is: 11,971.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.30 : 17,885.50 = 7,984.06 : x
  2. Step 2: Convert to fraction form
    11,928.30/17,885.50 = 7,984.06/x
  3. Step 3: Cross multiply
    11,928.30x = 17,885.50 × 7,984.06
  4. Step 4: Simplify right side
    11,928.30x = 142,798,905.13
  5. Step 5: Solve for x
    x = 142,798,905.13/11,928.30
  6. Step 6: Final answer
    x = 11,971.44

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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.