Home / 12,846,966-17,728,813.20-7,123,830

Finding the Fourth Proportional to 12,846,966, 17,728,813.20 and 7,123,830

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Solution

The fourth proportional to 12,846,966, 17,728,813.20 and 7,123,830 is: 9,830,885.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,846,966 : 17,728,813.20 = 7,123,830 : x
  2. Step 2: Convert to fraction form
    12,846,966/17,728,813.20 = 7,123,830/x
  3. Step 3: Cross multiply
    12,846,966x = 17,728,813.20 × 7,123,830
  4. Step 4: Simplify right side
    12,846,966x = 126,297,051,338,556
  5. Step 5: Solve for x
    x = 126,297,051,338,556/12,846,966
  6. Step 6: Final answer
    x = 9,830,885.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.