Home / 28,161,012.80-42,241,519.20-21,775,847.60

Finding the Fourth Proportional to 28,161,012.80, 42,241,519.20 and 21,775,847.60

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Solution

The fourth proportional to 28,161,012.80, 42,241,519.20 and 21,775,847.60 is: 32,663,771.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161,012.80 : 42,241,519.20 = 21,775,847.60 : x
  2. Step 2: Convert to fraction form
    28,161,012.80/42,241,519.20 = 21,775,847.60/x
  3. Step 3: Cross multiply
    28,161,012.80x = 42,241,519.20 × 21,775,847.60
  4. Step 4: Simplify right side
    28,161,012.80x = 919,844,884,491,674
  5. Step 5: Solve for x
    x = 919,844,884,491,674/28,161,012.80
  6. Step 6: Final answer
    x = 32,663,771.40

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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.