Home / 39,749.16-54,854.10-21,845.64

Finding the Fourth Proportional to 39,749.16, 54,854.10 and 21,845.64

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Solution

The fourth proportional to 39,749.16, 54,854.10 and 21,845.64 is: 30,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,749.16 : 54,854.10 = 21,845.64 : x
  2. Step 2: Convert to fraction form
    39,749.16/54,854.10 = 21,845.64/x
  3. Step 3: Cross multiply
    39,749.16x = 54,854.10 × 21,845.64
  4. Step 4: Simplify right side
    39,749.16x = 1,198,322,921.12
  5. Step 5: Solve for x
    x = 1,198,322,921.12/39,749.16
  6. Step 6: Final answer
    x = 30,147.13

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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.