Home / 20,920,987.83-31,289,698.17-18,631,624.08

Finding the Fourth Proportional to 20,920,987.83, 31,289,698.17 and 18,631,624.08

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Solution

The fourth proportional to 20,920,987.83, 31,289,698.17 and 18,631,624.08 is: 27,865,696.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920,987.83 : 31,289,698.17 = 18,631,624.08 : x
  2. Step 2: Convert to fraction form
    20,920,987.83/31,289,698.17 = 18,631,624.08/x
  3. Step 3: Cross multiply
    20,920,987.83x = 31,289,698.17 × 18,631,624.08
  4. Step 4: Simplify right side
    20,920,987.83x = 582,977,893,880,103.88
  5. Step 5: Solve for x
    x = 582,977,893,880,103.88/20,920,987.83
  6. Step 6: Final answer
    x = 27,865,696.33

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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.