Home / 39,586.50-54,626.52-21,678.61

Finding the Fourth Proportional to 39,586.50, 54,626.52 and 21,678.61

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Solution

The fourth proportional to 39,586.50, 54,626.52 and 21,678.61 is: 29,914.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,586.50 : 54,626.52 = 21,678.61 : x
  2. Step 2: Convert to fraction form
    39,586.50/54,626.52 = 21,678.61/x
  3. Step 3: Cross multiply
    39,586.50x = 54,626.52 × 21,678.61
  4. Step 4: Simplify right side
    39,586.50x = 1,184,227,022.74
  5. Step 5: Solve for x
    x = 1,184,227,022.74/39,586.50
  6. Step 6: Final answer
    x = 29,914.92

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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.