Home / 20,455.42-30,658.02-10,589.08

Finding the Fourth Proportional to 20,455.42, 30,658.02 and 10,589.08

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Solution

The fourth proportional to 20,455.42, 30,658.02 and 10,589.08 is: 15,870.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.42 : 30,658.02 = 10,589.08 : x
  2. Step 2: Convert to fraction form
    20,455.42/30,658.02 = 10,589.08/x
  3. Step 3: Cross multiply
    20,455.42x = 30,658.02 × 10,589.08
  4. Step 4: Simplify right side
    20,455.42x = 324,640,226.42
  5. Step 5: Solve for x
    x = 324,640,226.42/20,455.42
  6. Step 6: Final answer
    x = 15,870.62

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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.