Home / 21,049.36-31,557.27-12,154.59

Finding the Fourth Proportional to 21,049.36, 31,557.27 and 12,154.59

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Solution

The fourth proportional to 21,049.36, 31,557.27 and 12,154.59 is: 18,222.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.36 : 31,557.27 = 12,154.59 : x
  2. Step 2: Convert to fraction form
    21,049.36/31,557.27 = 12,154.59/x
  3. Step 3: Cross multiply
    21,049.36x = 31,557.27 × 12,154.59
  4. Step 4: Simplify right side
    21,049.36x = 383,565,723.95
  5. Step 5: Solve for x
    x = 383,565,723.95/21,049.36
  6. Step 6: Final answer
    x = 18,222.21

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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.