Home / 20,090,207,987.10-30,135,311,980.65-15,731,865,740.70

Finding the Fourth Proportional to 20,090,207,987.10, 30,135,311,980.65 and 15,731,865,740.70

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Solution

The fourth proportional to 20,090,207,987.10, 30,135,311,980.65 and 15,731,865,740.70 is: 23,597,798,611.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090,207,987.10 : 30,135,311,980.65 = 15,731,865,740.70 : x
  2. Step 2: Convert to fraction form
    20,090,207,987.10/30,135,311,980.65 = 15,731,865,740.70/x
  3. Step 3: Cross multiply
    20,090,207,987.10x = 30,135,311,980.65 × 15,731,865,740.70
  4. Step 4: Simplify right side
    20,090,207,987.10x = 474,084,682,133,694,054,400
  5. Step 5: Solve for x
    x = 474,084,682,133,694,054,400/20,090,207,987.10
  6. Step 6: Final answer
    x = 23,597,798,611.05

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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.