Home / 13,698,823.78-18,904,682.14-7,818,339.92

Finding the Fourth Proportional to 13,698,823.78, 18,904,682.14 and 7,818,339.92

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Solution

The fourth proportional to 13,698,823.78, 18,904,682.14 and 7,818,339.92 is: 10,789,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698,823.78 : 18,904,682.14 = 7,818,339.92 : x
  2. Step 2: Convert to fraction form
    13,698,823.78/18,904,682.14 = 7,818,339.92/x
  3. Step 3: Cross multiply
    13,698,823.78x = 18,904,682.14 × 7,818,339.92
  4. Step 4: Simplify right side
    13,698,823.78x = 147,803,230,936,003.75
  5. Step 5: Solve for x
    x = 147,803,230,936,003.75/13,698,823.78
  6. Step 6: Final answer
    x = 10,789,483.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.