Home / 21,651,261-29,878,729.80-12,949,433.43

Finding the Fourth Proportional to 21,651,261, 29,878,729.80 and 12,949,433.43

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Solution

The fourth proportional to 21,651,261, 29,878,729.80 and 12,949,433.43 is: 17,870,211.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651,261 : 29,878,729.80 = 12,949,433.43 : x
  2. Step 2: Convert to fraction form
    21,651,261/29,878,729.80 = 12,949,433.43/x
  3. Step 3: Cross multiply
    21,651,261x = 29,878,729.80 × 12,949,433.43
  4. Step 4: Simplify right side
    21,651,261x = 386,912,622,518,057.19
  5. Step 5: Solve for x
    x = 386,912,622,518,057.19/21,651,261
  6. Step 6: Final answer
    x = 17,870,211.93

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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.