Home / 22,455.15-30,988.35-12,383.61

Finding the Fourth Proportional to 22,455.15, 30,988.35 and 12,383.61

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Solution

The fourth proportional to 22,455.15, 30,988.35 and 12,383.61 is: 17,089.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,455.15 : 30,988.35 = 12,383.61 : x
  2. Step 2: Convert to fraction form
    22,455.15/30,988.35 = 12,383.61/x
  3. Step 3: Cross multiply
    22,455.15x = 30,988.35 × 12,383.61
  4. Step 4: Simplify right side
    22,455.15x = 383,747,640.94
  5. Step 5: Solve for x
    x = 383,747,640.94/22,455.15
  6. Step 6: Final answer
    x = 17,089.52

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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.