Home / 39,090.29-53,944.64-21,185.29

Finding the Fourth Proportional to 39,090.29, 53,944.64 and 21,185.29

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Solution

The fourth proportional to 39,090.29, 53,944.64 and 21,185.29 is: 29,235.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,090.29 : 53,944.64 = 21,185.29 : x
  2. Step 2: Convert to fraction form
    39,090.29/53,944.64 = 21,185.29/x
  3. Step 3: Cross multiply
    39,090.29x = 53,944.64 × 21,185.29
  4. Step 4: Simplify right side
    39,090.29x = 1,142,832,842.35
  5. Step 5: Solve for x
    x = 1,142,832,842.35/39,090.29
  6. Step 6: Final answer
    x = 29,235.72

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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.