Home / 28,090.85-38,764.01-15,515.33

Finding the Fourth Proportional to 28,090.85, 38,764.01 and 15,515.33

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Solution

The fourth proportional to 28,090.85, 38,764.01 and 15,515.33 is: 21,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.85 : 38,764.01 = 15,515.33 : x
  2. Step 2: Convert to fraction form
    28,090.85/38,764.01 = 15,515.33/x
  3. Step 3: Cross multiply
    28,090.85x = 38,764.01 × 15,515.33
  4. Step 4: Simplify right side
    28,090.85x = 601,436,252.24
  5. Step 5: Solve for x
    x = 601,436,252.24/28,090.85
  6. Step 6: Final answer
    x = 21,410.40

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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.