Home / 39,557.79-54,588.40-21,652.42

Finding the Fourth Proportional to 39,557.79, 54,588.40 and 21,652.42

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Solution

The fourth proportional to 39,557.79, 54,588.40 and 21,652.42 is: 29,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,557.79 : 54,588.40 = 21,652.42 : x
  2. Step 2: Convert to fraction form
    39,557.79/54,588.40 = 21,652.42/x
  3. Step 3: Cross multiply
    39,557.79x = 54,588.40 × 21,652.42
  4. Step 4: Simplify right side
    39,557.79x = 1,181,970,963.93
  5. Step 5: Solve for x
    x = 1,181,970,963.93/39,557.79
  6. Step 6: Final answer
    x = 29,879.60

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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.