Home / 39,279.36-54,205.62-21,374.36

Finding the Fourth Proportional to 39,279.36, 54,205.62 and 21,374.36

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Solution

The fourth proportional to 39,279.36, 54,205.62 and 21,374.36 is: 29,496.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.36 : 54,205.62 = 21,374.36 : x
  2. Step 2: Convert to fraction form
    39,279.36/54,205.62 = 21,374.36/x
  3. Step 3: Cross multiply
    39,279.36x = 54,205.62 × 21,374.36
  4. Step 4: Simplify right side
    39,279.36x = 1,158,610,435.90
  5. Step 5: Solve for x
    x = 1,158,610,435.90/39,279.36
  6. Step 6: Final answer
    x = 29,496.67

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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.