Home / 39,424.60-54,403.98-21,520.36

Finding the Fourth Proportional to 39,424.60, 54,403.98 and 21,520.36

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Solution

The fourth proportional to 39,424.60, 54,403.98 and 21,520.36 is: 29,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,424.60 : 54,403.98 = 21,520.36 : x
  2. Step 2: Convert to fraction form
    39,424.60/54,403.98 = 21,520.36/x
  3. Step 3: Cross multiply
    39,424.60x = 54,403.98 × 21,520.36
  4. Step 4: Simplify right side
    39,424.60x = 1,170,793,235.03
  5. Step 5: Solve for x
    x = 1,170,793,235.03/39,424.60
  6. Step 6: Final answer
    x = 29,697.02

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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.