Home / 19,809.78-27,321.75-16,835.46

Finding the Fourth Proportional to 19,809.78, 27,321.75 and 16,835.46

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Solution

The fourth proportional to 19,809.78, 27,321.75 and 16,835.46 is: 23,219.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.78 : 27,321.75 = 16,835.46 : x
  2. Step 2: Convert to fraction form
    19,809.78/27,321.75 = 16,835.46/x
  3. Step 3: Cross multiply
    19,809.78x = 27,321.75 × 16,835.46
  4. Step 4: Simplify right side
    19,809.78x = 459,974,229.26
  5. Step 5: Solve for x
    x = 459,974,229.26/19,809.78
  6. Step 6: Final answer
    x = 23,219.55

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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.