Home / 39,036.39-53,870.37-21,131.38

Finding the Fourth Proportional to 39,036.39, 53,870.37 and 21,131.38

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Solution

The fourth proportional to 39,036.39, 53,870.37 and 21,131.38 is: 29,161.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,036.39 : 53,870.37 = 21,131.38 : x
  2. Step 2: Convert to fraction form
    39,036.39/53,870.37 = 21,131.38/x
  3. Step 3: Cross multiply
    39,036.39x = 53,870.37 × 21,131.38
  4. Step 4: Simplify right side
    39,036.39x = 1,138,355,259.21
  5. Step 5: Solve for x
    x = 1,138,355,259.21/39,036.39
  6. Step 6: Final answer
    x = 29,161.39

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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.