Home / 21,629,901.21-29,847,372.23-12,807,769.81

Finding the Fourth Proportional to 21,629,901.21, 29,847,372.23 and 12,807,769.81

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Solution

The fourth proportional to 21,629,901.21, 29,847,372.23 and 12,807,769.81 is: 17,673,602.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,629,901.21 : 29,847,372.23 = 12,807,769.81 : x
  2. Step 2: Convert to fraction form
    21,629,901.21/29,847,372.23 = 12,807,769.81/x
  3. Step 3: Cross multiply
    21,629,901.21x = 29,847,372.23 × 12,807,769.81
  4. Step 4: Simplify right side
    21,629,901.21x = 382,278,272,955,226.38
  5. Step 5: Solve for x
    x = 382,278,272,955,226.38/21,629,901.21
  6. Step 6: Final answer
    x = 17,673,602.35

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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.