Home / 28,188,728.14-38,905,900.36-18,382,147.02

Finding the Fourth Proportional to 28,188,728.14, 38,905,900.36 and 18,382,147.02

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Solution

The fourth proportional to 28,188,728.14, 38,905,900.36 and 18,382,147.02 is: 25,370,920.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188,728.14 : 38,905,900.36 = 18,382,147.02 : x
  2. Step 2: Convert to fraction form
    28,188,728.14/38,905,900.36 = 18,382,147.02/x
  3. Step 3: Cross multiply
    28,188,728.14x = 38,905,900.36 × 18,382,147.02
  4. Step 4: Simplify right side
    28,188,728.14x = 715,173,980,362,990.88
  5. Step 5: Solve for x
    x = 715,173,980,362,990.88/28,188,728.14
  6. Step 6: Final answer
    x = 25,370,920.49

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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.