Home / 21,102.58-29,107.83-13,536.93

Finding the Fourth Proportional to 21,102.58, 29,107.83 and 13,536.93

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Solution

The fourth proportional to 21,102.58, 29,107.83 and 13,536.93 is: 18,672.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.58 : 29,107.83 = 13,536.93 : x
  2. Step 2: Convert to fraction form
    21,102.58/29,107.83 = 13,536.93/x
  3. Step 3: Cross multiply
    21,102.58x = 29,107.83 × 13,536.93
  4. Step 4: Simplify right side
    21,102.58x = 394,030,657.16
  5. Step 5: Solve for x
    x = 394,030,657.16/21,102.58
  6. Step 6: Final answer
    x = 18,672.16

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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.