Home / 13,920,742.76-20,856,408.26-5,815,881.14

Finding the Fourth Proportional to 13,920,742.76, 20,856,408.26 and 5,815,881.14

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Solution

The fourth proportional to 13,920,742.76, 20,856,408.26 and 5,815,881.14 is: 8,713,499.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920,742.76 : 20,856,408.26 = 5,815,881.14 : x
  2. Step 2: Convert to fraction form
    13,920,742.76/20,856,408.26 = 5,815,881.14/x
  3. Step 3: Cross multiply
    13,920,742.76x = 20,856,408.26 × 5,815,881.14
  4. Step 4: Simplify right side
    13,920,742.76x = 121,298,391,314,112.77
  5. Step 5: Solve for x
    x = 121,298,391,314,112.77/13,920,742.76
  6. Step 6: Final answer
    x = 8,713,499.95

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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.