Home / 39,887.12-55,041.98-21,982.07

Finding the Fourth Proportional to 39,887.12, 55,041.98 and 21,982.07

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Solution

The fourth proportional to 39,887.12, 55,041.98 and 21,982.07 is: 30,334.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,887.12 : 55,041.98 = 21,982.07 : x
  2. Step 2: Convert to fraction form
    39,887.12/55,041.98 = 21,982.07/x
  3. Step 3: Cross multiply
    39,887.12x = 55,041.98 × 21,982.07
  4. Step 4: Simplify right side
    39,887.12x = 1,209,936,272.18
  5. Step 5: Solve for x
    x = 1,209,936,272.18/39,887.12
  6. Step 6: Final answer
    x = 30,334.01

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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.