Home / 21,586.73-29,790.11-13,086.77

Finding the Fourth Proportional to 21,586.73, 29,790.11 and 13,086.77

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Solution

The fourth proportional to 21,586.73, 29,790.11 and 13,086.77 is: 18,060.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,586.73 : 29,790.11 = 13,086.77 : x
  2. Step 2: Convert to fraction form
    21,586.73/29,790.11 = 13,086.77/x
  3. Step 3: Cross multiply
    21,586.73x = 29,790.11 × 13,086.77
  4. Step 4: Simplify right side
    21,586.73x = 389,856,317.84
  5. Step 5: Solve for x
    x = 389,856,317.84/21,586.73
  6. Step 6: Final answer
    x = 18,060.00

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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.