Home / 9,415,121.42-12,993,299.10-5,228,825.45

Finding the Fourth Proportional to 9,415,121.42, 12,993,299.10 and 5,228,825.45

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Solution

The fourth proportional to 9,415,121.42, 12,993,299.10 and 5,228,825.45 is: 7,216,018.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415,121.42 : 12,993,299.10 = 5,228,825.45 : x
  2. Step 2: Convert to fraction form
    9,415,121.42/12,993,299.10 = 5,228,825.45/x
  3. Step 3: Cross multiply
    9,415,121.42x = 12,993,299.10 × 5,228,825.45
  4. Step 4: Simplify right side
    9,415,121.42x = 67,939,693,021,662.90
  5. Step 5: Solve for x
    x = 67,939,693,021,662.90/9,415,121.42
  6. Step 6: Final answer
    x = 7,216,018.79

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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.