Home / 19,945.20-29,873.64-10,556.40

Finding the Fourth Proportional to 19,945.20, 29,873.64 and 10,556.40

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Solution

The fourth proportional to 19,945.20, 29,873.64 and 10,556.40 is: 15,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,945.20 : 29,873.64 = 10,556.40 : x
  2. Step 2: Convert to fraction form
    19,945.20/29,873.64 = 10,556.40/x
  3. Step 3: Cross multiply
    19,945.20x = 29,873.64 × 10,556.40
  4. Step 4: Simplify right side
    19,945.20x = 315,358,093.30
  5. Step 5: Solve for x
    x = 315,358,093.30/19,945.20
  6. Step 6: Final answer
    x = 15,811.23

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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.