Home / 39,222.26-58,840.68-12,928.86

Finding the Fourth Proportional to 39,222.26, 58,840.68 and 12,928.86

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Solution

The fourth proportional to 39,222.26, 58,840.68 and 12,928.86 is: 19,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,222.26 : 58,840.68 = 12,928.86 : x
  2. Step 2: Convert to fraction form
    39,222.26/58,840.68 = 12,928.86/x
  3. Step 3: Cross multiply
    39,222.26x = 58,840.68 × 12,928.86
  4. Step 4: Simplify right side
    39,222.26x = 760,742,914.02
  5. Step 5: Solve for x
    x = 760,742,914.02/39,222.26
  6. Step 6: Final answer
    x = 19,395.69

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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.