Home / 20,138,678.40-30,219,827.40-7,360,474.80

Finding the Fourth Proportional to 20,138,678.40, 30,219,827.40 and 7,360,474.80

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Solution

The fourth proportional to 20,138,678.40, 30,219,827.40 and 7,360,474.80 is: 11,045,028.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138,678.40 : 30,219,827.40 = 7,360,474.80 : x
  2. Step 2: Convert to fraction form
    20,138,678.40/30,219,827.40 = 7,360,474.80/x
  3. Step 3: Cross multiply
    20,138,678.40x = 30,219,827.40 × 7,360,474.80
  4. Step 4: Simplify right side
    20,138,678.40x = 222,432,278,038,049.50
  5. Step 5: Solve for x
    x = 222,432,278,038,049.50/20,138,678.40
  6. Step 6: Final answer
    x = 11,045,028.56

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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.