Home / 39,287.84-54,218.54-21,383.49

Finding the Fourth Proportional to 39,287.84, 54,218.54 and 21,383.49

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Solution

The fourth proportional to 39,287.84, 54,218.54 and 21,383.49 is: 29,509.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287.84 : 54,218.54 = 21,383.49 : x
  2. Step 2: Convert to fraction form
    39,287.84/54,218.54 = 21,383.49/x
  3. Step 3: Cross multiply
    39,287.84x = 54,218.54 × 21,383.49
  4. Step 4: Simplify right side
    39,287.84x = 1,159,381,661.36
  5. Step 5: Solve for x
    x = 1,159,381,661.36/39,287.84
  6. Step 6: Final answer
    x = 29,509.94

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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.