Home / 12,985,671.70-19,478,507.55-12,653,895.70

Finding the Fourth Proportional to 12,985,671.70, 19,478,507.55 and 12,653,895.70

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Solution

The fourth proportional to 12,985,671.70, 19,478,507.55 and 12,653,895.70 is: 18,980,843.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,671.70 : 19,478,507.55 = 12,653,895.70 : x
  2. Step 2: Convert to fraction form
    12,985,671.70/19,478,507.55 = 12,653,895.70/x
  3. Step 3: Cross multiply
    12,985,671.70x = 19,478,507.55 × 12,653,895.70
  4. Step 4: Simplify right side
    12,985,671.70x = 246,479,002,929,362.53
  5. Step 5: Solve for x
    x = 246,479,002,929,362.53/12,985,671.70
  6. Step 6: Final answer
    x = 18,980,843.55

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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.