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Finding the Fourth Proportional to 12,798,917.51, 17,662,673.70 and 6,997,705.92

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Solution

The fourth proportional to 12,798,917.51, 17,662,673.70 and 6,997,705.92 is: 9,656,925.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798,917.51 : 17,662,673.70 = 6,997,705.92 : x
  2. Step 2: Convert to fraction form
    12,798,917.51/17,662,673.70 = 6,997,705.92/x
  3. Step 3: Cross multiply
    12,798,917.51x = 17,662,673.70 × 6,997,705.92
  4. Step 4: Simplify right side
    12,798,917.51x = 123,598,196,313,518.30
  5. Step 5: Solve for x
    x = 123,598,196,313,518.30/12,798,917.51
  6. Step 6: Final answer
    x = 9,656,925.77

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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.