Home / 28,294,022.12-42,436,769.20-18,129,909.31

Finding the Fourth Proportional to 28,294,022.12, 42,436,769.20 and 18,129,909.31

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Solution

The fourth proportional to 28,294,022.12, 42,436,769.20 and 18,129,909.31 is: 27,192,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,294,022.12 : 42,436,769.20 = 18,129,909.31 : x
  2. Step 2: Convert to fraction form
    28,294,022.12/42,436,769.20 = 18,129,909.31/x
  3. Step 3: Cross multiply
    28,294,022.12x = 42,436,769.20 × 18,129,909.31
  4. Step 4: Simplify right side
    28,294,022.12x = 769,374,776,853,984.50
  5. Step 5: Solve for x
    x = 769,374,776,853,984.50/28,294,022.12
  6. Step 6: Final answer
    x = 27,192,131.74

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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.