Home / 19,708.75-27,198.12-12,644.74

Finding the Fourth Proportional to 19,708.75, 27,198.12 and 12,644.74

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Solution

The fourth proportional to 19,708.75, 27,198.12 and 12,644.74 is: 17,449.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,708.75 : 27,198.12 = 12,644.74 : x
  2. Step 2: Convert to fraction form
    19,708.75/27,198.12 = 12,644.74/x
  3. Step 3: Cross multiply
    19,708.75x = 27,198.12 × 12,644.74
  4. Step 4: Simplify right side
    19,708.75x = 343,913,155.89
  5. Step 5: Solve for x
    x = 343,913,155.89/19,708.75
  6. Step 6: Final answer
    x = 17,449.77

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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.