Home / 39,887.51-55,044.50-21,982.53

Finding the Fourth Proportional to 39,887.51, 55,044.50 and 21,982.53

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Solution

The fourth proportional to 39,887.51, 55,044.50 and 21,982.53 is: 30,335.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,887.51 : 55,044.50 = 21,982.53 : x
  2. Step 2: Convert to fraction form
    39,887.51/55,044.50 = 21,982.53/x
  3. Step 3: Cross multiply
    39,887.51x = 55,044.50 × 21,982.53
  4. Step 4: Simplify right side
    39,887.51x = 1,210,017,427.54
  5. Step 5: Solve for x
    x = 1,210,017,427.54/39,887.51
  6. Step 6: Final answer
    x = 30,335.75

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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.