Home / 39,670.37-54,745.02-21,765.59

Finding the Fourth Proportional to 39,670.37, 54,745.02 and 21,765.59

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Solution

The fourth proportional to 39,670.37, 54,745.02 and 21,765.59 is: 30,036.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.37 : 54,745.02 = 21,765.59 : x
  2. Step 2: Convert to fraction form
    39,670.37/54,745.02 = 21,765.59/x
  3. Step 3: Cross multiply
    39,670.37x = 54,745.02 × 21,765.59
  4. Step 4: Simplify right side
    39,670.37x = 1,191,557,386.14
  5. Step 5: Solve for x
    x = 1,191,557,386.14/39,670.37
  6. Step 6: Final answer
    x = 30,036.46

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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.