Home / 21,108.22-29,130.69-14,029.90

Finding the Fourth Proportional to 21,108.22, 29,130.69 and 14,029.90

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Solution

The fourth proportional to 21,108.22, 29,130.69 and 14,029.90 is: 19,362.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.22 : 29,130.69 = 14,029.90 : x
  2. Step 2: Convert to fraction form
    21,108.22/29,130.69 = 14,029.90/x
  3. Step 3: Cross multiply
    21,108.22x = 29,130.69 × 14,029.90
  4. Step 4: Simplify right side
    21,108.22x = 408,700,667.63
  5. Step 5: Solve for x
    x = 408,700,667.63/21,108.22
  6. Step 6: Final answer
    x = 19,362.16

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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.