Home / 39,090.47-53,944.85-21,185.48

Finding the Fourth Proportional to 39,090.47, 53,944.85 and 21,185.48

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Solution

The fourth proportional to 39,090.47, 53,944.85 and 21,185.48 is: 29,235.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,090.47 : 53,944.85 = 21,185.48 : x
  2. Step 2: Convert to fraction form
    39,090.47/53,944.85 = 21,185.48/x
  3. Step 3: Cross multiply
    39,090.47x = 53,944.85 × 21,185.48
  4. Step 4: Simplify right side
    39,090.47x = 1,142,847,728.60
  5. Step 5: Solve for x
    x = 1,142,847,728.60/39,090.47
  6. Step 6: Final answer
    x = 29,235.97

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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.