Home / 19,991.87-27,582.23-12,031.19

Finding the Fourth Proportional to 19,991.87, 27,582.23 and 12,031.19

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Solution

The fourth proportional to 19,991.87, 27,582.23 and 12,031.19 is: 16,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.87 : 27,582.23 = 12,031.19 : x
  2. Step 2: Convert to fraction form
    19,991.87/27,582.23 = 12,031.19/x
  3. Step 3: Cross multiply
    19,991.87x = 27,582.23 × 12,031.19
  4. Step 4: Simplify right side
    19,991.87x = 331,846,989.60
  5. Step 5: Solve for x
    x = 331,846,989.60/19,991.87
  6. Step 6: Final answer
    x = 16,599.10

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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.