Home / 20,142,268.20-30,222,331.74-10,555,367.40

Finding the Fourth Proportional to 20,142,268.20, 30,222,331.74 and 10,555,367.40

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Solution

The fourth proportional to 20,142,268.20, 30,222,331.74 and 10,555,367.40 is: 15,837,730.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142,268.20 : 30,222,331.74 = 10,555,367.40 : x
  2. Step 2: Convert to fraction form
    20,142,268.20/30,222,331.74 = 10,555,367.40/x
  3. Step 3: Cross multiply
    20,142,268.20x = 30,222,331.74 × 10,555,367.40
  4. Step 4: Simplify right side
    20,142,268.20x = 319,007,815,200,381.25
  5. Step 5: Solve for x
    x = 319,007,815,200,381.25/20,142,268.20
  6. Step 6: Final answer
    x = 15,837,730.49

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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.