Home / 21,089.36-29,102.43-12,137.18

Finding the Fourth Proportional to 21,089.36, 29,102.43 and 12,137.18

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Solution

The fourth proportional to 21,089.36, 29,102.43 and 12,137.18 is: 16,748.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.36 : 29,102.43 = 12,137.18 : x
  2. Step 2: Convert to fraction form
    21,089.36/29,102.43 = 12,137.18/x
  3. Step 3: Cross multiply
    21,089.36x = 29,102.43 × 12,137.18
  4. Step 4: Simplify right side
    21,089.36x = 353,221,285.84
  5. Step 5: Solve for x
    x = 353,221,285.84/21,089.36
  6. Step 6: Final answer
    x = 16,748.79

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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.