Home / 15,443.42-21,311.41-9,069.89

Finding the Fourth Proportional to 15,443.42, 21,311.41 and 9,069.89

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Solution

The fourth proportional to 15,443.42, 21,311.41 and 9,069.89 is: 12,516.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.42 : 21,311.41 = 9,069.89 : x
  2. Step 2: Convert to fraction form
    15,443.42/21,311.41 = 9,069.89/x
  3. Step 3: Cross multiply
    15,443.42x = 21,311.41 × 9,069.89
  4. Step 4: Simplify right side
    15,443.42x = 193,292,144.44
  5. Step 5: Solve for x
    x = 193,292,144.44/15,443.42
  6. Step 6: Final answer
    x = 12,516.15

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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.