Home / 39,784.51-54,904.37-21,880.17

Finding the Fourth Proportional to 39,784.51, 54,904.37 and 21,880.17

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Solution

The fourth proportional to 39,784.51, 54,904.37 and 21,880.17 is: 30,195.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,784.51 : 54,904.37 = 21,880.17 : x
  2. Step 2: Convert to fraction form
    39,784.51/54,904.37 = 21,880.17/x
  3. Step 3: Cross multiply
    39,784.51x = 54,904.37 × 21,880.17
  4. Step 4: Simplify right side
    39,784.51x = 1,201,316,839.94
  5. Step 5: Solve for x
    x = 1,201,316,839.94/39,784.51
  6. Step 6: Final answer
    x = 30,195.59

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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.