Home / 20,829,976.07-31,229,830.80-8,702,907.57

Finding the Fourth Proportional to 20,829,976.07, 31,229,830.80 and 8,702,907.57

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Solution

The fourth proportional to 20,829,976.07, 31,229,830.80 and 8,702,907.57 is: 13,048,038.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829,976.07 : 31,229,830.80 = 8,702,907.57 : x
  2. Step 2: Convert to fraction form
    20,829,976.07/31,229,830.80 = 8,702,907.57/x
  3. Step 3: Cross multiply
    20,829,976.07x = 31,229,830.80 × 8,702,907.57
  4. Step 4: Simplify right side
    20,829,976.07x = 271,790,330,879,139.16
  5. Step 5: Solve for x
    x = 271,790,330,879,139.16/20,829,976.07
  6. Step 6: Final answer
    x = 13,048,038.56

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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.