Home / 20,938,885.84-28,895,707.56-11,771,603.92

Finding the Fourth Proportional to 20,938,885.84, 28,895,707.56 and 11,771,603.92

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Solution

The fourth proportional to 20,938,885.84, 28,895,707.56 and 11,771,603.92 is: 16,244,838.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938,885.84 : 28,895,707.56 = 11,771,603.92 : x
  2. Step 2: Convert to fraction form
    20,938,885.84/28,895,707.56 = 11,771,603.92/x
  3. Step 3: Cross multiply
    20,938,885.84x = 28,895,707.56 × 11,771,603.92
  4. Step 4: Simplify right side
    20,938,885.84x = 340,148,824,384,469.62
  5. Step 5: Solve for x
    x = 340,148,824,384,469.62/20,938,885.84
  6. Step 6: Final answer
    x = 16,244,838.76

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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.