Home / 28,325.25-39,062.03-20,661.57

Finding the Fourth Proportional to 28,325.25, 39,062.03 and 20,661.57

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Solution

The fourth proportional to 28,325.25, 39,062.03 and 20,661.57 is: 28,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,325.25 : 39,062.03 = 20,661.57 : x
  2. Step 2: Convert to fraction form
    28,325.25/39,062.03 = 20,661.57/x
  3. Step 3: Cross multiply
    28,325.25x = 39,062.03 × 20,661.57
  4. Step 4: Simplify right side
    28,325.25x = 807,082,763.88
  5. Step 5: Solve for x
    x = 807,082,763.88/28,325.25
  6. Step 6: Final answer
    x = 28,493.40

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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.