Home / 19,091.70-28,637.55-13,186.80

Finding the Fourth Proportional to 19,091.70, 28,637.55 and 13,186.80

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Solution

The fourth proportional to 19,091.70, 28,637.55 and 13,186.80 is: 19,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.70 : 28,637.55 = 13,186.80 : x
  2. Step 2: Convert to fraction form
    19,091.70/28,637.55 = 13,186.80/x
  3. Step 3: Cross multiply
    19,091.70x = 28,637.55 × 13,186.80
  4. Step 4: Simplify right side
    19,091.70x = 377,637,644.34
  5. Step 5: Solve for x
    x = 377,637,644.34/19,091.70
  6. Step 6: Final answer
    x = 19,780.20

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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.