Home / 21,089.55-29,102.43-11,657.50

Finding the Fourth Proportional to 21,089.55, 29,102.43 and 11,657.50

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Solution

The fourth proportional to 21,089.55, 29,102.43 and 11,657.50 is: 16,086.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.55 : 29,102.43 = 11,657.50 : x
  2. Step 2: Convert to fraction form
    21,089.55/29,102.43 = 11,657.50/x
  3. Step 3: Cross multiply
    21,089.55x = 29,102.43 × 11,657.50
  4. Step 4: Simplify right side
    21,089.55x = 339,261,577.73
  5. Step 5: Solve for x
    x = 339,261,577.73/21,089.55
  6. Step 6: Final answer
    x = 16,086.71

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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.