Home / 28,019.12-38,664.06-15,443.84

Finding the Fourth Proportional to 28,019.12, 38,664.06 and 15,443.84

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Solution

The fourth proportional to 28,019.12, 38,664.06 and 15,443.84 is: 21,311.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.12 : 38,664.06 = 15,443.84 : x
  2. Step 2: Convert to fraction form
    28,019.12/38,664.06 = 15,443.84/x
  3. Step 3: Cross multiply
    28,019.12x = 38,664.06 × 15,443.84
  4. Step 4: Simplify right side
    28,019.12x = 597,121,556.39
  5. Step 5: Solve for x
    x = 597,121,556.39/28,019.12
  6. Step 6: Final answer
    x = 21,311.22

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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.