Home / 21,489.77-32,234.61-12,125.54

Finding the Fourth Proportional to 21,489.77, 32,234.61 and 12,125.54

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Solution

The fourth proportional to 21,489.77, 32,234.61 and 12,125.54 is: 18,188.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.77 : 32,234.61 = 12,125.54 : x
  2. Step 2: Convert to fraction form
    21,489.77/32,234.61 = 12,125.54/x
  3. Step 3: Cross multiply
    21,489.77x = 32,234.61 × 12,125.54
  4. Step 4: Simplify right side
    21,489.77x = 390,862,052.94
  5. Step 5: Solve for x
    x = 390,862,052.94/21,489.77
  6. Step 6: Final answer
    x = 18,188.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.