Home / 20,941,962.80-28,905,040.44-12,800,026.16

Finding the Fourth Proportional to 20,941,962.80, 28,905,040.44 and 12,800,026.16

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Solution

The fourth proportional to 20,941,962.80, 28,905,040.44 and 12,800,026.16 is: 17,667,172.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941,962.80 : 28,905,040.44 = 12,800,026.16 : x
  2. Step 2: Convert to fraction form
    20,941,962.80/28,905,040.44 = 12,800,026.16/x
  3. Step 3: Cross multiply
    20,941,962.80x = 28,905,040.44 × 12,800,026.16
  4. Step 4: Simplify right side
    20,941,962.80x = 369,985,273,787,857.94
  5. Step 5: Solve for x
    x = 369,985,273,787,857.94/20,941,962.80
  6. Step 6: Final answer
    x = 17,667,172.72

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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.