Home / 40,055.20-55,277.36-21,907

Finding the Fourth Proportional to 40,055.20, 55,277.36 and 21,907

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Solution

The fourth proportional to 40,055.20, 55,277.36 and 21,907 is: 30,232.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,055.20 : 55,277.36 = 21,907 : x
  2. Step 2: Convert to fraction form
    40,055.20/55,277.36 = 21,907/x
  3. Step 3: Cross multiply
    40,055.20x = 55,277.36 × 21,907
  4. Step 4: Simplify right side
    40,055.20x = 1,210,961,125.52
  5. Step 5: Solve for x
    x = 1,210,961,125.52/40,055.20
  6. Step 6: Final answer
    x = 30,232.31

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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.