Home / 21,181,897.96-31,760,501.81-8,212,897.67

Finding the Fourth Proportional to 21,181,897.96, 31,760,501.81 and 8,212,897.67

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Solution

The fourth proportional to 21,181,897.96, 31,760,501.81 and 8,212,897.67 is: 12,314,559.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181,897.96 : 31,760,501.81 = 8,212,897.67 : x
  2. Step 2: Convert to fraction form
    21,181,897.96/31,760,501.81 = 8,212,897.67/x
  3. Step 3: Cross multiply
    21,181,897.96x = 31,760,501.81 × 8,212,897.67
  4. Step 4: Simplify right side
    21,181,897.96x = 260,845,751,175,109.53
  5. Step 5: Solve for x
    x = 260,845,751,175,109.53/21,181,897.96
  6. Step 6: Final answer
    x = 12,314,559.90

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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.