Home / 19,578.45-29,301.14-12,086.78

Finding the Fourth Proportional to 19,578.45, 29,301.14 and 12,086.78

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Solution

The fourth proportional to 19,578.45, 29,301.14 and 12,086.78 is: 18,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,578.45 : 29,301.14 = 12,086.78 : x
  2. Step 2: Convert to fraction form
    19,578.45/29,301.14 = 12,086.78/x
  3. Step 3: Cross multiply
    19,578.45x = 29,301.14 × 12,086.78
  4. Step 4: Simplify right side
    19,578.45x = 354,156,522.66
  5. Step 5: Solve for x
    x = 354,156,522.66/19,578.45
  6. Step 6: Final answer
    x = 18,089.10

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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.