Home / 20,478,359.80-30,717,539.70-18,423,454.60

Finding the Fourth Proportional to 20,478,359.80, 30,717,539.70 and 18,423,454.60

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Solution

The fourth proportional to 20,478,359.80, 30,717,539.70 and 18,423,454.60 is: 27,635,181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478,359.80 : 30,717,539.70 = 18,423,454.60 : x
  2. Step 2: Convert to fraction form
    20,478,359.80/30,717,539.70 = 18,423,454.60/x
  3. Step 3: Cross multiply
    20,478,359.80x = 30,717,539.70 × 18,423,454.60
  4. Step 4: Simplify right side
    20,478,359.80x = 565,923,198,086,647.62
  5. Step 5: Solve for x
    x = 565,923,198,086,647.62/20,478,359.80
  6. Step 6: Final answer
    x = 27,635,181.90

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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.