Home / 30,207,979.20-45,311,968.80-18,728,853.60

Finding the Fourth Proportional to 30,207,979.20, 45,311,968.80 and 18,728,853.60

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Solution

The fourth proportional to 30,207,979.20, 45,311,968.80 and 18,728,853.60 is: 28,093,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207,979.20 : 45,311,968.80 = 18,728,853.60 : x
  2. Step 2: Convert to fraction form
    30,207,979.20/45,311,968.80 = 18,728,853.60/x
  3. Step 3: Cross multiply
    30,207,979.20x = 45,311,968.80 × 18,728,853.60
  4. Step 4: Simplify right side
    30,207,979.20x = 848,641,229,982,967.75
  5. Step 5: Solve for x
    x = 848,641,229,982,967.75/30,207,979.20
  6. Step 6: Final answer
    x = 28,093,280.40

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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.