Home / 39,459.53-54,455.46-21,556.20

Finding the Fourth Proportional to 39,459.53, 54,455.46 and 21,556.20

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Solution

The fourth proportional to 39,459.53, 54,455.46 and 21,556.20 is: 29,748.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,459.53 : 54,455.46 = 21,556.20 : x
  2. Step 2: Convert to fraction form
    39,459.53/54,455.46 = 21,556.20/x
  3. Step 3: Cross multiply
    39,459.53x = 54,455.46 × 21,556.20
  4. Step 4: Simplify right side
    39,459.53x = 1,173,852,786.85
  5. Step 5: Solve for x
    x = 1,173,852,786.85/39,459.53
  6. Step 6: Final answer
    x = 29,748.27

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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.