Home / 12,828.40-17,705.94-8,344.36

Finding the Fourth Proportional to 12,828.40, 17,705.94 and 8,344.36

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Solution

The fourth proportional to 12,828.40, 17,705.94 and 8,344.36 is: 11,517.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,828.40 : 17,705.94 = 8,344.36 : x
  2. Step 2: Convert to fraction form
    12,828.40/17,705.94 = 8,344.36/x
  3. Step 3: Cross multiply
    12,828.40x = 17,705.94 × 8,344.36
  4. Step 4: Simplify right side
    12,828.40x = 147,744,737.50
  5. Step 5: Solve for x
    x = 147,744,737.50/12,828.40
  6. Step 6: Final answer
    x = 11,517.00

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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.