Home / 19,846.80-27,389.98-13,120.74

Finding the Fourth Proportional to 19,846.80, 27,389.98 and 13,120.74

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Solution

The fourth proportional to 19,846.80, 27,389.98 and 13,120.74 is: 18,107.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,846.80 : 27,389.98 = 13,120.74 : x
  2. Step 2: Convert to fraction form
    19,846.80/27,389.98 = 13,120.74/x
  3. Step 3: Cross multiply
    19,846.80x = 27,389.98 × 13,120.74
  4. Step 4: Simplify right side
    19,846.80x = 359,376,806.19
  5. Step 5: Solve for x
    x = 359,376,806.19/19,846.80
  6. Step 6: Final answer
    x = 18,107.54

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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.