Home / 28,021.58-38,669.80-15,274.82

Finding the Fourth Proportional to 28,021.58, 38,669.80 and 15,274.82

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Solution

The fourth proportional to 28,021.58, 38,669.80 and 15,274.82 is: 21,079.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.58 : 38,669.80 = 15,274.82 : x
  2. Step 2: Convert to fraction form
    28,021.58/38,669.80 = 15,274.82/x
  3. Step 3: Cross multiply
    28,021.58x = 38,669.80 × 15,274.82
  4. Step 4: Simplify right side
    28,021.58x = 590,674,234.44
  5. Step 5: Solve for x
    x = 590,674,234.44/28,021.58
  6. Step 6: Final answer
    x = 21,079.26

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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.