Home / 25,974.80-38,981.40-10,403.60

Finding the Fourth Proportional to 25,974.80, 38,981.40 and 10,403.60

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Solution

The fourth proportional to 25,974.80, 38,981.40 and 10,403.60 is: 15,613.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,974.80 : 38,981.40 = 10,403.60 : x
  2. Step 2: Convert to fraction form
    25,974.80/38,981.40 = 10,403.60/x
  3. Step 3: Cross multiply
    25,974.80x = 38,981.40 × 10,403.60
  4. Step 4: Simplify right side
    25,974.80x = 405,546,893.04
  5. Step 5: Solve for x
    x = 405,546,893.04/25,974.80
  6. Step 6: Final answer
    x = 15,613.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.