Home / 20,210,868.20-30,335,329.20-10,633,120.40

Finding the Fourth Proportional to 20,210,868.20, 30,335,329.20 and 10,633,120.40

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Solution

The fourth proportional to 20,210,868.20, 30,335,329.20 and 10,633,120.40 is: 15,959,690.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210,868.20 : 30,335,329.20 = 10,633,120.40 : x
  2. Step 2: Convert to fraction form
    20,210,868.20/30,335,329.20 = 10,633,120.40/x
  3. Step 3: Cross multiply
    20,210,868.20x = 30,335,329.20 × 10,633,120.40
  4. Step 4: Simplify right side
    20,210,868.20x = 322,559,207,757,235.69
  5. Step 5: Solve for x
    x = 322,559,207,757,235.69/20,210,868.20
  6. Step 6: Final answer
    x = 15,959,690.82

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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.