Home / 28,645.86-39,550.56-21,919.48

Finding the Fourth Proportional to 28,645.86, 39,550.56 and 21,919.48

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Solution

The fourth proportional to 28,645.86, 39,550.56 and 21,919.48 is: 30,263.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,645.86 : 39,550.56 = 21,919.48 : x
  2. Step 2: Convert to fraction form
    28,645.86/39,550.56 = 21,919.48/x
  3. Step 3: Cross multiply
    28,645.86x = 39,550.56 × 21,919.48
  4. Step 4: Simplify right side
    28,645.86x = 866,927,708.91
  5. Step 5: Solve for x
    x = 866,927,708.91/28,645.86
  6. Step 6: Final answer
    x = 30,263.63

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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.