Home / 20,302.88-28,018.37-11,351.03

Finding the Fourth Proportional to 20,302.88, 28,018.37 and 11,351.03

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Solution

The fourth proportional to 20,302.88, 28,018.37 and 11,351.03 is: 15,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.88 : 28,018.37 = 11,351.03 : x
  2. Step 2: Convert to fraction form
    20,302.88/28,018.37 = 11,351.03/x
  3. Step 3: Cross multiply
    20,302.88x = 28,018.37 × 11,351.03
  4. Step 4: Simplify right side
    20,302.88x = 318,037,301.67
  5. Step 5: Solve for x
    x = 318,037,301.67/20,302.88
  6. Step 6: Final answer
    x = 15,664.64

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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.