Home / 21,540,702.18-29,722,103.45-12,839,684.40

Finding the Fourth Proportional to 21,540,702.18, 29,722,103.45 and 12,839,684.40

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Solution

The fourth proportional to 21,540,702.18, 29,722,103.45 and 12,839,684.40 is: 17,716,341.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540,702.18 : 29,722,103.45 = 12,839,684.40 : x
  2. Step 2: Convert to fraction form
    21,540,702.18/29,722,103.45 = 12,839,684.40/x
  3. Step 3: Cross multiply
    21,540,702.18x = 29,722,103.45 × 12,839,684.40
  4. Step 4: Simplify right side
    21,540,702.18x = 381,622,427,937,952.75
  5. Step 5: Solve for x
    x = 381,622,427,937,952.75/21,540,702.18
  6. Step 6: Final answer
    x = 17,716,341.13

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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.