Home / 28,981.74-39,998.12-16,238.36

Finding the Fourth Proportional to 28,981.74, 39,998.12 and 16,238.36

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Solution

The fourth proportional to 28,981.74, 39,998.12 and 16,238.36 is: 22,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.74 : 39,998.12 = 16,238.36 : x
  2. Step 2: Convert to fraction form
    28,981.74/39,998.12 = 16,238.36/x
  3. Step 3: Cross multiply
    28,981.74x = 39,998.12 × 16,238.36
  4. Step 4: Simplify right side
    28,981.74x = 649,503,871.88
  5. Step 5: Solve for x
    x = 649,503,871.88/28,981.74
  6. Step 6: Final answer
    x = 22,410.80

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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.