Home / 21,135,156.55-31,692,741.45-8,187,371.76

Finding the Fourth Proportional to 21,135,156.55, 31,692,741.45 and 8,187,371.76

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Solution

The fourth proportional to 21,135,156.55, 31,692,741.45 and 8,187,371.76 is: 12,277,186.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135,156.55 : 31,692,741.45 = 8,187,371.76 : x
  2. Step 2: Convert to fraction form
    21,135,156.55/31,692,741.45 = 8,187,371.76/x
  3. Step 3: Cross multiply
    21,135,156.55x = 31,692,741.45 × 8,187,371.76
  4. Step 4: Simplify right side
    21,135,156.55x = 259,480,256,344,711.44
  5. Step 5: Solve for x
    x = 259,480,256,344,711.44/21,135,156.55
  6. Step 6: Final answer
    x = 12,277,186.39

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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.