Home / 12,857,891.40-19,271,090.70-5,661,786.60

Finding the Fourth Proportional to 12,857,891.40, 19,271,090.70 and 5,661,786.60

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Solution

The fourth proportional to 12,857,891.40, 19,271,090.70 and 5,661,786.60 is: 8,485,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857,891.40 : 19,271,090.70 = 5,661,786.60 : x
  2. Step 2: Convert to fraction form
    12,857,891.40/19,271,090.70 = 5,661,786.60/x
  3. Step 3: Cross multiply
    12,857,891.40x = 19,271,090.70 × 5,661,786.60
  4. Step 4: Simplify right side
    12,857,891.40x = 109,108,803,092,644.61
  5. Step 5: Solve for x
    x = 109,108,803,092,644.61/12,857,891.40
  6. Step 6: Final answer
    x = 8,485,746.20

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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.