Home / 39,980.40-55,172.40-22,076.16

Finding the Fourth Proportional to 39,980.40, 55,172.40 and 22,076.16

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Solution

The fourth proportional to 39,980.40, 55,172.40 and 22,076.16 is: 30,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.40 : 55,172.40 = 22,076.16 : x
  2. Step 2: Convert to fraction form
    39,980.40/55,172.40 = 22,076.16/x
  3. Step 3: Cross multiply
    39,980.40x = 55,172.40 × 22,076.16
  4. Step 4: Simplify right side
    39,980.40x = 1,217,994,729.98
  5. Step 5: Solve for x
    x = 1,217,994,729.98/39,980.40
  6. Step 6: Final answer
    x = 30,464.80

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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.