Home / 28,145.22-42,232.41-20,417.82

Finding the Fourth Proportional to 28,145.22, 42,232.41 and 20,417.82

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Solution

The fourth proportional to 28,145.22, 42,232.41 and 20,417.82 is: 30,637.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.22 : 42,232.41 = 20,417.82 : x
  2. Step 2: Convert to fraction form
    28,145.22/42,232.41 = 20,417.82/x
  3. Step 3: Cross multiply
    28,145.22x = 42,232.41 × 20,417.82
  4. Step 4: Simplify right side
    28,145.22x = 862,293,745.55
  5. Step 5: Solve for x
    x = 862,293,745.55/28,145.22
  6. Step 6: Final answer
    x = 30,637.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.