Home / 13,698,820.41-18,904,677.48-7,818,336.54

Finding the Fourth Proportional to 13,698,820.41, 18,904,677.48 and 7,818,336.54

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Solution

The fourth proportional to 13,698,820.41, 18,904,677.48 and 7,818,336.54 is: 10,789,478.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698,820.41 : 18,904,677.48 = 7,818,336.54 : x
  2. Step 2: Convert to fraction form
    13,698,820.41/18,904,677.48 = 7,818,336.54/x
  3. Step 3: Cross multiply
    13,698,820.41x = 18,904,677.48 × 7,818,336.54
  4. Step 4: Simplify right side
    13,698,820.41x = 147,803,130,718,799.12
  5. Step 5: Solve for x
    x = 147,803,130,718,799.12/13,698,820.41
  6. Step 6: Final answer
    x = 10,789,478.68

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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.