Home / 39,325.72-54,268.74-21,420.52

Finding the Fourth Proportional to 39,325.72, 54,268.74 and 21,420.52

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Solution

The fourth proportional to 39,325.72, 54,268.74 and 21,420.52 is: 29,559.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,325.72 : 54,268.74 = 21,420.52 : x
  2. Step 2: Convert to fraction form
    39,325.72/54,268.74 = 21,420.52/x
  3. Step 3: Cross multiply
    39,325.72x = 54,268.74 × 21,420.52
  4. Step 4: Simplify right side
    39,325.72x = 1,162,464,630.54
  5. Step 5: Solve for x
    x = 1,162,464,630.54/39,325.72
  6. Step 6: Final answer
    x = 29,559.91

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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.