Home / 28,585,403.20-42,853,989.48-12,399,168.34

Finding the Fourth Proportional to 28,585,403.20, 42,853,989.48 and 12,399,168.34

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Solution

The fourth proportional to 28,585,403.20, 42,853,989.48 and 12,399,168.34 is: 18,588,292.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585,403.20 : 42,853,989.48 = 12,399,168.34 : x
  2. Step 2: Convert to fraction form
    28,585,403.20/42,853,989.48 = 12,399,168.34/x
  3. Step 3: Cross multiply
    28,585,403.20x = 42,853,989.48 × 12,399,168.34
  4. Step 4: Simplify right side
    28,585,403.20x = 531,353,829,603,109
  5. Step 5: Solve for x
    x = 531,353,829,603,109/28,585,403.20
  6. Step 6: Final answer
    x = 18,588,292.28

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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.