Home / 12,775,335.40-19,176,999.90-7,988,429.80

Finding the Fourth Proportional to 12,775,335.40, 19,176,999.90 and 7,988,429.80

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Solution

The fourth proportional to 12,775,335.40, 19,176,999.90 and 7,988,429.80 is: 11,991,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775,335.40 : 19,176,999.90 = 7,988,429.80 : x
  2. Step 2: Convert to fraction form
    12,775,335.40/19,176,999.90 = 7,988,429.80/x
  3. Step 3: Cross multiply
    12,775,335.40x = 19,176,999.90 × 7,988,429.80
  4. Step 4: Simplify right side
    12,775,335.40x = 153,194,117,475,757
  5. Step 5: Solve for x
    x = 153,194,117,475,757/12,775,335.40
  6. Step 6: Final answer
    x = 11,991,396.91

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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.