Home / 8,965.50-13,359.14-7,984.05

Finding the Fourth Proportional to 8,965.50, 13,359.14 and 7,984.05

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Solution

The fourth proportional to 8,965.50, 13,359.14 and 7,984.05 is: 11,896.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.50 : 13,359.14 = 7,984.05 : x
  2. Step 2: Convert to fraction form
    8,965.50/13,359.14 = 7,984.05/x
  3. Step 3: Cross multiply
    8,965.50x = 13,359.14 × 7,984.05
  4. Step 4: Simplify right side
    8,965.50x = 106,660,001.80
  5. Step 5: Solve for x
    x = 106,660,001.80/8,965.50
  6. Step 6: Final answer
    x = 11,896.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.