Home / 21,623.36-29,866.73-15,645.56

Finding the Fourth Proportional to 21,623.36, 29,866.73 and 15,645.56

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Solution

The fourth proportional to 21,623.36, 29,866.73 and 15,645.56 is: 21,610.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.36 : 29,866.73 = 15,645.56 : x
  2. Step 2: Convert to fraction form
    21,623.36/29,866.73 = 15,645.56/x
  3. Step 3: Cross multiply
    21,623.36x = 29,866.73 × 15,645.56
  4. Step 4: Simplify right side
    21,623.36x = 467,281,488.66
  5. Step 5: Solve for x
    x = 467,281,488.66/21,623.36
  6. Step 6: Final answer
    x = 21,610.04

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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.