Home / 21,625.51-29,826.41-13,664.83

Finding the Fourth Proportional to 21,625.51, 29,826.41 and 13,664.83

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Solution

The fourth proportional to 21,625.51, 29,826.41 and 13,664.83 is: 18,846.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,625.51 : 29,826.41 = 13,664.83 : x
  2. Step 2: Convert to fraction form
    21,625.51/29,826.41 = 13,664.83/x
  3. Step 3: Cross multiply
    21,625.51x = 29,826.41 × 13,664.83
  4. Step 4: Simplify right side
    21,625.51x = 407,572,822.16
  5. Step 5: Solve for x
    x = 407,572,822.16/21,625.51
  6. Step 6: Final answer
    x = 18,846.85

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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.