Home / 12,669,405.40-17,483,802.78-6,868,169.20

Finding the Fourth Proportional to 12,669,405.40, 17,483,802.78 and 6,868,169.20

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Solution

The fourth proportional to 12,669,405.40, 17,483,802.78 and 6,868,169.20 is: 9,478,086.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669,405.40 : 17,483,802.78 = 6,868,169.20 : x
  2. Step 2: Convert to fraction form
    12,669,405.40/17,483,802.78 = 6,868,169.20/x
  3. Step 3: Cross multiply
    12,669,405.40x = 17,483,802.78 × 6,868,169.20
  4. Step 4: Simplify right side
    12,669,405.40x = 120,081,715,752,470.39
  5. Step 5: Solve for x
    x = 120,081,715,752,470.39/12,669,405.40
  6. Step 6: Final answer
    x = 9,478,086.14

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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.