Home / 28,412.24-39,194.48-21,686.19

Finding the Fourth Proportional to 28,412.24, 39,194.48 and 21,686.19

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Solution

The fourth proportional to 28,412.24, 39,194.48 and 21,686.19 is: 29,915.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,412.24 : 39,194.48 = 21,686.19 : x
  2. Step 2: Convert to fraction form
    28,412.24/39,194.48 = 21,686.19/x
  3. Step 3: Cross multiply
    28,412.24x = 39,194.48 × 21,686.19
  4. Step 4: Simplify right side
    28,412.24x = 849,978,940.23
  5. Step 5: Solve for x
    x = 849,978,940.23/28,412.24
  6. Step 6: Final answer
    x = 29,915.94

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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.