Home / 28,755.36-39,423.60-28,230.48

Finding the Fourth Proportional to 28,755.36, 39,423.60 and 28,230.48

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Solution

The fourth proportional to 28,755.36, 39,423.60 and 28,230.48 is: 38,703.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,755.36 : 39,423.60 = 28,230.48 : x
  2. Step 2: Convert to fraction form
    28,755.36/39,423.60 = 28,230.48/x
  3. Step 3: Cross multiply
    28,755.36x = 39,423.60 × 28,230.48
  4. Step 4: Simplify right side
    28,755.36x = 1,112,947,151.33
  5. Step 5: Solve for x
    x = 1,112,947,151.33/28,755.36
  6. Step 6: Final answer
    x = 38,703.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.