Home / 12,160.56-16,780.14-6,855.06

Finding the Fourth Proportional to 12,160.56, 16,780.14 and 6,855.06

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Solution

The fourth proportional to 12,160.56, 16,780.14 and 6,855.06 is: 9,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.56 : 16,780.14 = 6,855.06 : x
  2. Step 2: Convert to fraction form
    12,160.56/16,780.14 = 6,855.06/x
  3. Step 3: Cross multiply
    12,160.56x = 16,780.14 × 6,855.06
  4. Step 4: Simplify right side
    12,160.56x = 115,028,841.70
  5. Step 5: Solve for x
    x = 115,028,841.70/12,160.56
  6. Step 6: Final answer
    x = 9,459.18

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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.