Home / 28,090.41-38,764.79-15,515.16

Finding the Fourth Proportional to 28,090.41, 38,764.79 and 15,515.16

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Solution

The fourth proportional to 28,090.41, 38,764.79 and 15,515.16 is: 21,410.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.41 : 38,764.79 = 15,515.16 : x
  2. Step 2: Convert to fraction form
    28,090.41/38,764.79 = 15,515.16/x
  3. Step 3: Cross multiply
    28,090.41x = 38,764.79 × 15,515.16
  4. Step 4: Simplify right side
    28,090.41x = 601,441,919.22
  5. Step 5: Solve for x
    x = 601,441,919.22/28,090.41
  6. Step 6: Final answer
    x = 21,410.93

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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.