Home / 21,181,897.77-31,760,501.53-8,212,897.48

Finding the Fourth Proportional to 21,181,897.77, 31,760,501.53 and 8,212,897.48

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Solution

The fourth proportional to 21,181,897.77, 31,760,501.53 and 8,212,897.48 is: 12,314,559.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181,897.77 : 31,760,501.53 = 8,212,897.48 : x
  2. Step 2: Convert to fraction form
    21,181,897.77/31,760,501.53 = 8,212,897.48/x
  3. Step 3: Cross multiply
    21,181,897.77x = 31,760,501.53 × 8,212,897.48
  4. Step 4: Simplify right side
    21,181,897.77x = 260,845,742,954,289.78
  5. Step 5: Solve for x
    x = 260,845,742,954,289.78/21,181,897.77
  6. Step 6: Final answer
    x = 12,314,559.62

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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.