Home / 25,145.92-34,745.16-20,666.26

Finding the Fourth Proportional to 25,145.92, 34,745.16 and 20,666.26

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Solution

The fourth proportional to 25,145.92, 34,745.16 and 20,666.26 is: 28,555.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,145.92 : 34,745.16 = 20,666.26 : x
  2. Step 2: Convert to fraction form
    25,145.92/34,745.16 = 20,666.26/x
  3. Step 3: Cross multiply
    25,145.92x = 34,745.16 × 20,666.26
  4. Step 4: Simplify right side
    25,145.92x = 718,052,510.30
  5. Step 5: Solve for x
    x = 718,052,510.30/25,145.92
  6. Step 6: Final answer
    x = 28,555.43

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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.