Home / 21,190.43-31,785.66-15,383.95

Finding the Fourth Proportional to 21,190.43, 31,785.66 and 15,383.95

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Solution

The fourth proportional to 21,190.43, 31,785.66 and 15,383.95 is: 23,075.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.43 : 31,785.66 = 15,383.95 : x
  2. Step 2: Convert to fraction form
    21,190.43/31,785.66 = 15,383.95/x
  3. Step 3: Cross multiply
    21,190.43x = 31,785.66 × 15,383.95
  4. Step 4: Simplify right side
    21,190.43x = 488,988,924.69
  5. Step 5: Solve for x
    x = 488,988,924.69/21,190.43
  6. Step 6: Final answer
    x = 23,075.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.