Home / 21,027.63-29,020.10-15,713.22

Finding the Fourth Proportional to 21,027.63, 29,020.10 and 15,713.22

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Solution

The fourth proportional to 21,027.63, 29,020.10 and 15,713.22 is: 21,685.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.63 : 29,020.10 = 15,713.22 : x
  2. Step 2: Convert to fraction form
    21,027.63/29,020.10 = 15,713.22/x
  3. Step 3: Cross multiply
    21,027.63x = 29,020.10 × 15,713.22
  4. Step 4: Simplify right side
    21,027.63x = 455,999,137.16
  5. Step 5: Solve for x
    x = 455,999,137.16/21,027.63
  6. Step 6: Final answer
    x = 21,685.71

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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.