Home / 38,317.78-52,878.02-21,550.78

Finding the Fourth Proportional to 38,317.78, 52,878.02 and 21,550.78

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Solution

The fourth proportional to 38,317.78, 52,878.02 and 21,550.78 is: 29,739.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,317.78 : 52,878.02 = 21,550.78 : x
  2. Step 2: Convert to fraction form
    38,317.78/52,878.02 = 21,550.78/x
  3. Step 3: Cross multiply
    38,317.78x = 52,878.02 × 21,550.78
  4. Step 4: Simplify right side
    38,317.78x = 1,139,562,575.86
  5. Step 5: Solve for x
    x = 1,139,562,575.86/38,317.78
  6. Step 6: Final answer
    x = 29,739.79

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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.