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Finding the Fourth Proportional to 12,907,229.16, 17,811,299.98 and 7,104,877.58

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Solution

The fourth proportional to 12,907,229.16, 17,811,299.98 and 7,104,877.58 is: 9,804,358.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907,229.16 : 17,811,299.98 = 7,104,877.58 : x
  2. Step 2: Convert to fraction form
    12,907,229.16/17,811,299.98 = 7,104,877.58/x
  3. Step 3: Cross multiply
    12,907,229.16x = 17,811,299.98 × 7,104,877.58
  4. Step 4: Simplify right side
    12,907,229.16x = 126,547,105,898,556.45
  5. Step 5: Solve for x
    x = 126,547,105,898,556.45/12,907,229.16
  6. Step 6: Final answer
    x = 9,804,358.81

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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.