Home / 39,245.90-54,157.32-21,340.26

Finding the Fourth Proportional to 39,245.90, 54,157.32 and 21,340.26

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Solution

The fourth proportional to 39,245.90, 54,157.32 and 21,340.26 is: 29,448.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,245.90 : 54,157.32 = 21,340.26 : x
  2. Step 2: Convert to fraction form
    39,245.90/54,157.32 = 21,340.26/x
  3. Step 3: Cross multiply
    39,245.90x = 54,157.32 × 21,340.26
  4. Step 4: Simplify right side
    39,245.90x = 1,155,731,289.70
  5. Step 5: Solve for x
    x = 1,155,731,289.70/39,245.90
  6. Step 6: Final answer
    x = 29,448.46

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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.