Home / 28,434.27-39,240.14-15,858.75

Finding the Fourth Proportional to 28,434.27, 39,240.14 and 15,858.75

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Solution

The fourth proportional to 28,434.27, 39,240.14 and 15,858.75 is: 21,885.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.27 : 39,240.14 = 15,858.75 : x
  2. Step 2: Convert to fraction form
    28,434.27/39,240.14 = 15,858.75/x
  3. Step 3: Cross multiply
    28,434.27x = 39,240.14 × 15,858.75
  4. Step 4: Simplify right side
    28,434.27x = 622,299,490.93
  5. Step 5: Solve for x
    x = 622,299,490.93/28,434.27
  6. Step 6: Final answer
    x = 21,885.54

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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.