Home / 10,685.90-14,747.98-8,028.70

Finding the Fourth Proportional to 10,685.90, 14,747.98 and 8,028.70

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Solution

The fourth proportional to 10,685.90, 14,747.98 and 8,028.70 is: 11,080.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,685.90 : 14,747.98 = 8,028.70 : x
  2. Step 2: Convert to fraction form
    10,685.90/14,747.98 = 8,028.70/x
  3. Step 3: Cross multiply
    10,685.90x = 14,747.98 × 8,028.70
  4. Step 4: Simplify right side
    10,685.90x = 118,407,107.03
  5. Step 5: Solve for x
    x = 118,407,107.03/10,685.90
  6. Step 6: Final answer
    x = 11,080.69

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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.