Home / 12,455,638.61-18,690,836.48-5,266,778.45

Finding the Fourth Proportional to 12,455,638.61, 18,690,836.48 and 5,266,778.45

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Solution

The fourth proportional to 12,455,638.61, 18,690,836.48 and 5,266,778.45 is: 7,903,287.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,638.61 : 18,690,836.48 = 5,266,778.45 : x
  2. Step 2: Convert to fraction form
    12,455,638.61/18,690,836.48 = 5,266,778.45/x
  3. Step 3: Cross multiply
    12,455,638.61x = 18,690,836.48 × 5,266,778.45
  4. Step 4: Simplify right side
    12,455,638.61x = 98,440,494,759,003.97
  5. Step 5: Solve for x
    x = 98,440,494,759,003.97/12,455,638.61
  6. Step 6: Final answer
    x = 7,903,287.65

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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.