Home / 21,536.73-29,720.70-12,105.36

Finding the Fourth Proportional to 21,536.73, 29,720.70 and 12,105.36

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Solution

The fourth proportional to 21,536.73, 29,720.70 and 12,105.36 is: 16,705.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,536.73 : 29,720.70 = 12,105.36 : x
  2. Step 2: Convert to fraction form
    21,536.73/29,720.70 = 12,105.36/x
  3. Step 3: Cross multiply
    21,536.73x = 29,720.70 × 12,105.36
  4. Step 4: Simplify right side
    21,536.73x = 359,779,772.95
  5. Step 5: Solve for x
    x = 359,779,772.95/21,536.73
  6. Step 6: Final answer
    x = 16,705.40

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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.