Home / 28,625.56-39,503.64-15,879.04

Finding the Fourth Proportional to 28,625.56, 39,503.64 and 15,879.04

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Solution

The fourth proportional to 28,625.56, 39,503.64 and 15,879.04 is: 21,913.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,625.56 : 39,503.64 = 15,879.04 : x
  2. Step 2: Convert to fraction form
    28,625.56/39,503.64 = 15,879.04/x
  3. Step 3: Cross multiply
    28,625.56x = 39,503.64 × 15,879.04
  4. Step 4: Simplify right side
    28,625.56x = 627,279,879.71
  5. Step 5: Solve for x
    x = 627,279,879.71/28,625.56
  6. Step 6: Final answer
    x = 21,913.28

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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.