Home / 28,018.36-38,665.33-15,271.56

Finding the Fourth Proportional to 28,018.36, 38,665.33 and 15,271.56

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Solution

The fourth proportional to 28,018.36, 38,665.33 and 15,271.56 is: 21,074.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.36 : 38,665.33 = 15,271.56 : x
  2. Step 2: Convert to fraction form
    28,018.36/38,665.33 = 15,271.56/x
  3. Step 3: Cross multiply
    28,018.36x = 38,665.33 × 15,271.56
  4. Step 4: Simplify right side
    28,018.36x = 590,479,907.01
  5. Step 5: Solve for x
    x = 590,479,907.01/28,018.36
  6. Step 6: Final answer
    x = 21,074.75

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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.