Home / 12,308,217.40-18,465,738.90-5,123,135.80

Finding the Fourth Proportional to 12,308,217.40, 18,465,738.90 and 5,123,135.80

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Solution

The fourth proportional to 12,308,217.40, 18,465,738.90 and 5,123,135.80 is: 7,686,124.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,308,217.40 : 18,465,738.90 = 5,123,135.80 : x
  2. Step 2: Convert to fraction form
    12,308,217.40/18,465,738.90 = 5,123,135.80/x
  3. Step 3: Cross multiply
    12,308,217.40x = 18,465,738.90 × 5,123,135.80
  4. Step 4: Simplify right side
    12,308,217.40x = 94,602,488,032,042.61
  5. Step 5: Solve for x
    x = 94,602,488,032,042.61/12,308,217.40
  6. Step 6: Final answer
    x = 7,686,124.23

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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.