Home / 22,122.18-30,529.58-12,561.89

Finding the Fourth Proportional to 22,122.18, 30,529.58 and 12,561.89

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Solution

The fourth proportional to 22,122.18, 30,529.58 and 12,561.89 is: 17,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,122.18 : 30,529.58 = 12,561.89 : x
  2. Step 2: Convert to fraction form
    22,122.18/30,529.58 = 12,561.89/x
  3. Step 3: Cross multiply
    22,122.18x = 30,529.58 × 12,561.89
  4. Step 4: Simplify right side
    22,122.18x = 383,509,010.25
  5. Step 5: Solve for x
    x = 383,509,010.25/22,122.18
  6. Step 6: Final answer
    x = 17,335.95

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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.