Home / 12,983.80-17,905.88-8,505.92

Finding the Fourth Proportional to 12,983.80, 17,905.88 and 8,505.92

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Solution

The fourth proportional to 12,983.80, 17,905.88 and 8,505.92 is: 11,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,983.80 : 17,905.88 = 8,505.92 : x
  2. Step 2: Convert to fraction form
    12,983.80/17,905.88 = 8,505.92/x
  3. Step 3: Cross multiply
    12,983.80x = 17,905.88 × 8,505.92
  4. Step 4: Simplify right side
    12,983.80x = 152,305,982.81
  5. Step 5: Solve for x
    x = 152,305,982.81/12,983.80
  6. Step 6: Final answer
    x = 11,730.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.