Home / 28,627.83-39,478.26-21,839.22

Finding the Fourth Proportional to 28,627.83, 39,478.26 and 21,839.22

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Solution

The fourth proportional to 28,627.83, 39,478.26 and 21,839.22 is: 30,116.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,627.83 : 39,478.26 = 21,839.22 : x
  2. Step 2: Convert to fraction form
    28,627.83/39,478.26 = 21,839.22/x
  3. Step 3: Cross multiply
    28,627.83x = 39,478.26 × 21,839.22
  4. Step 4: Simplify right side
    28,627.83x = 862,174,405.36
  5. Step 5: Solve for x
    x = 862,174,405.36/28,627.83
  6. Step 6: Final answer
    x = 30,116.65

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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.