Home / 13,101,878.84-18,081,938.20-7,876,578.64

Finding the Fourth Proportional to 13,101,878.84, 18,081,938.20 and 7,876,578.64

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Solution

The fourth proportional to 13,101,878.84, 18,081,938.20 and 7,876,578.64 is: 10,870,487.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101,878.84 : 18,081,938.20 = 7,876,578.64 : x
  2. Step 2: Convert to fraction form
    13,101,878.84/18,081,938.20 = 7,876,578.64/x
  3. Step 3: Cross multiply
    13,101,878.84x = 18,081,938.20 × 7,876,578.64
  4. Step 4: Simplify right side
    13,101,878.84x = 142,423,808,195,920.03
  5. Step 5: Solve for x
    x = 142,423,808,195,920.03/13,101,878.84
  6. Step 6: Final answer
    x = 10,870,487.35

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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.