Home / 13,708,969.49-18,920,408.38-8,680,186.39

Finding the Fourth Proportional to 13,708,969.49, 18,920,408.38 and 8,680,186.39

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Solution

The fourth proportional to 13,708,969.49, 18,920,408.38 and 8,680,186.39 is: 11,979,942.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708,969.49 : 18,920,408.38 = 8,680,186.39 : x
  2. Step 2: Convert to fraction form
    13,708,969.49/18,920,408.38 = 8,680,186.39/x
  3. Step 3: Cross multiply
    13,708,969.49x = 18,920,408.38 × 8,680,186.39
  4. Step 4: Simplify right side
    13,708,969.49x = 164,232,671,313,317.94
  5. Step 5: Solve for x
    x = 164,232,671,313,317.94/13,708,969.49
  6. Step 6: Final answer
    x = 11,979,942.87

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1.5x scale

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.