Home / 21,051.90-29,053.35-12,100.86

Finding the Fourth Proportional to 21,051.90, 29,053.35 and 12,100.86

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Solution

The fourth proportional to 21,051.90, 29,053.35 and 12,100.86 is: 16,700.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.90 : 29,053.35 = 12,100.86 : x
  2. Step 2: Convert to fraction form
    21,051.90/29,053.35 = 12,100.86/x
  3. Step 3: Cross multiply
    21,051.90x = 29,053.35 × 12,100.86
  4. Step 4: Simplify right side
    21,051.90x = 351,570,520.88
  5. Step 5: Solve for x
    x = 351,570,520.88/21,051.90
  6. Step 6: Final answer
    x = 16,700.18

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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.