Home / 19,820.70-27,366.91-12,759.42

Finding the Fourth Proportional to 19,820.70, 27,366.91 and 12,759.42

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Solution

The fourth proportional to 19,820.70, 27,366.91 and 12,759.42 is: 17,617.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.70 : 27,366.91 = 12,759.42 : x
  2. Step 2: Convert to fraction form
    19,820.70/27,366.91 = 12,759.42/x
  3. Step 3: Cross multiply
    19,820.70x = 27,366.91 × 12,759.42
  4. Step 4: Simplify right side
    19,820.70x = 349,185,914.74
  5. Step 5: Solve for x
    x = 349,185,914.74/19,820.70
  6. Step 6: Final answer
    x = 17,617.24

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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.