Home / 43,981.77-65,972.69-12,391.84

Finding the Fourth Proportional to 43,981.77, 65,972.69 and 12,391.84

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Solution

The fourth proportional to 43,981.77, 65,972.69 and 12,391.84 is: 18,587.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,981.77 : 65,972.69 = 12,391.84 : x
  2. Step 2: Convert to fraction form
    43,981.77/65,972.69 = 12,391.84/x
  3. Step 3: Cross multiply
    43,981.77x = 65,972.69 × 12,391.84
  4. Step 4: Simplify right side
    43,981.77x = 817,523,018.85
  5. Step 5: Solve for x
    x = 817,523,018.85/43,981.77
  6. Step 6: Final answer
    x = 18,587.77

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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.