Home / 19,161.90-26,443.14-10,778.40

Finding the Fourth Proportional to 19,161.90, 26,443.14 and 10,778.40

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Solution

The fourth proportional to 19,161.90, 26,443.14 and 10,778.40 is: 14,874.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161.90 : 26,443.14 = 10,778.40 : x
  2. Step 2: Convert to fraction form
    19,161.90/26,443.14 = 10,778.40/x
  3. Step 3: Cross multiply
    19,161.90x = 26,443.14 × 10,778.40
  4. Step 4: Simplify right side
    19,161.90x = 285,014,740.18
  5. Step 5: Solve for x
    x = 285,014,740.18/19,161.90
  6. Step 6: Final answer
    x = 14,874.03

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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.