Home / 21,228,130.62-31,836,038.54-8,271,391.28

Finding the Fourth Proportional to 21,228,130.62, 31,836,038.54 and 8,271,391.28

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Solution

The fourth proportional to 21,228,130.62, 31,836,038.54 and 8,271,391.28 is: 12,404,687.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228,130.62 : 31,836,038.54 = 8,271,391.28 : x
  2. Step 2: Convert to fraction form
    21,228,130.62/31,836,038.54 = 8,271,391.28/x
  3. Step 3: Cross multiply
    21,228,130.62x = 31,836,038.54 × 8,271,391.28
  4. Step 4: Simplify right side
    21,228,130.62x = 263,328,331,368,962.78
  5. Step 5: Solve for x
    x = 263,328,331,368,962.78/21,228,130.62
  6. Step 6: Final answer
    x = 12,404,687.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.