Home / 18,991,415.25-28,487,158.47-4,614,495.21

Finding the Fourth Proportional to 18,991,415.25, 28,487,158.47 and 4,614,495.21

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Solution

The fourth proportional to 18,991,415.25, 28,487,158.47 and 4,614,495.21 is: 6,921,751.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991,415.25 : 28,487,158.47 = 4,614,495.21 : x
  2. Step 2: Convert to fraction form
    18,991,415.25/28,487,158.47 = 4,614,495.21/x
  3. Step 3: Cross multiply
    18,991,415.25x = 28,487,158.47 × 4,614,495.21
  4. Step 4: Simplify right side
    18,991,415.25x = 131,453,856,306,325.92
  5. Step 5: Solve for x
    x = 131,453,856,306,325.92/18,991,415.25
  6. Step 6: Final answer
    x = 6,921,751.46

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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.