Home / 28,401.30-39,192.21-15,651.99

Finding the Fourth Proportional to 28,401.30, 39,192.21 and 15,651.99

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Solution

The fourth proportional to 28,401.30, 39,192.21 and 15,651.99 is: 21,598.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.30 : 39,192.21 = 15,651.99 : x
  2. Step 2: Convert to fraction form
    28,401.30/39,192.21 = 15,651.99/x
  3. Step 3: Cross multiply
    28,401.30x = 39,192.21 × 15,651.99
  4. Step 4: Simplify right side
    28,401.30x = 613,436,079.00
  5. Step 5: Solve for x
    x = 613,436,079.00/28,401.30
  6. Step 6: Final answer
    x = 21,598.87

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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.