Home / 19,918.76-29,878.14-6,780.56

Finding the Fourth Proportional to 19,918.76, 29,878.14 and 6,780.56

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Solution

The fourth proportional to 19,918.76, 29,878.14 and 6,780.56 is: 10,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.76 : 29,878.14 = 6,780.56 : x
  2. Step 2: Convert to fraction form
    19,918.76/29,878.14 = 6,780.56/x
  3. Step 3: Cross multiply
    19,918.76x = 29,878.14 × 6,780.56
  4. Step 4: Simplify right side
    19,918.76x = 202,590,520.96
  5. Step 5: Solve for x
    x = 202,590,520.96/19,918.76
  6. Step 6: Final answer
    x = 10,170.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.