Home / 39,039.21-53,873.74-21,133.76

Finding the Fourth Proportional to 39,039.21, 53,873.74 and 21,133.76

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Solution

The fourth proportional to 39,039.21, 53,873.74 and 21,133.76 is: 29,164.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.21 : 53,873.74 = 21,133.76 : x
  2. Step 2: Convert to fraction form
    39,039.21/53,873.74 = 21,133.76/x
  3. Step 3: Cross multiply
    39,039.21x = 53,873.74 × 21,133.76
  4. Step 4: Simplify right side
    39,039.21x = 1,138,554,691.46
  5. Step 5: Solve for x
    x = 1,138,554,691.46/39,039.21
  6. Step 6: Final answer
    x = 29,164.39

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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.