Home / 28,422.14-39,222.54-15,846.86

Finding the Fourth Proportional to 28,422.14, 39,222.54 and 15,846.86

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Solution

The fourth proportional to 28,422.14, 39,222.54 and 15,846.86 is: 21,868.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.14 : 39,222.54 = 15,846.86 : x
  2. Step 2: Convert to fraction form
    28,422.14/39,222.54 = 15,846.86/x
  3. Step 3: Cross multiply
    28,422.14x = 39,222.54 × 15,846.86
  4. Step 4: Simplify right side
    28,422.14x = 621,554,100.22
  5. Step 5: Solve for x
    x = 621,554,100.22/28,422.14
  6. Step 6: Final answer
    x = 21,868.66

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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.