Home / 12,457,853.40-18,686,780.10-7,335,024.60

Finding the Fourth Proportional to 12,457,853.40, 18,686,780.10 and 7,335,024.60

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Solution

The fourth proportional to 12,457,853.40, 18,686,780.10 and 7,335,024.60 is: 11,002,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,853.40 : 18,686,780.10 = 7,335,024.60 : x
  2. Step 2: Convert to fraction form
    12,457,853.40/18,686,780.10 = 7,335,024.60/x
  3. Step 3: Cross multiply
    12,457,853.40x = 18,686,780.10 × 7,335,024.60
  4. Step 4: Simplify right side
    12,457,853.40x = 137,067,991,728,290.47
  5. Step 5: Solve for x
    x = 137,067,991,728,290.47/12,457,853.40
  6. Step 6: Final answer
    x = 11,002,536.90

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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.