Home / 39,802.94-54,928.32-21,897.50

Finding the Fourth Proportional to 39,802.94, 54,928.32 and 21,897.50

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Solution

The fourth proportional to 39,802.94, 54,928.32 and 21,897.50 is: 30,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,802.94 : 54,928.32 = 21,897.50 : x
  2. Step 2: Convert to fraction form
    39,802.94/54,928.32 = 21,897.50/x
  3. Step 3: Cross multiply
    39,802.94x = 54,928.32 × 21,897.50
  4. Step 4: Simplify right side
    39,802.94x = 1,202,792,887.20
  5. Step 5: Solve for x
    x = 1,202,792,887.20/39,802.94
  6. Step 6: Final answer
    x = 30,218.69

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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.