Home / 20,751,018.90-31,127,663.16-8,621,708.73

Finding the Fourth Proportional to 20,751,018.90, 31,127,663.16 and 8,621,708.73

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Solution

The fourth proportional to 20,751,018.90, 31,127,663.16 and 8,621,708.73 is: 12,933,034.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751,018.90 : 31,127,663.16 = 8,621,708.73 : x
  2. Step 2: Convert to fraction form
    20,751,018.90/31,127,663.16 = 8,621,708.73/x
  3. Step 3: Cross multiply
    20,751,018.90x = 31,127,663.16 × 8,621,708.73
  4. Step 4: Simplify right side
    20,751,018.90x = 268,373,645,211,071.41
  5. Step 5: Solve for x
    x = 268,373,645,211,071.41/20,751,018.90
  6. Step 6: Final answer
    x = 12,933,034.59

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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.