Home / 20,571,056.57-28,386,973.09-11,748,773.43

Finding the Fourth Proportional to 20,571,056.57, 28,386,973.09 and 11,748,773.43

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Solution

The fourth proportional to 20,571,056.57, 28,386,973.09 and 11,748,773.43 is: 16,212,687.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571,056.57 : 28,386,973.09 = 11,748,773.43 : x
  2. Step 2: Convert to fraction form
    20,571,056.57/28,386,973.09 = 11,748,773.43/x
  3. Step 3: Cross multiply
    20,571,056.57x = 28,386,973.09 × 11,748,773.43
  4. Step 4: Simplify right side
    20,571,056.57x = 333,512,115,197,917
  5. Step 5: Solve for x
    x = 333,512,115,197,917/20,571,056.57
  6. Step 6: Final answer
    x = 16,212,687.67

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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.