Home / 12,938,718.80-19,408,078.20-7,899,870.80

Finding the Fourth Proportional to 12,938,718.80, 19,408,078.20 and 7,899,870.80

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Solution

The fourth proportional to 12,938,718.80, 19,408,078.20 and 7,899,870.80 is: 11,849,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938,718.80 : 19,408,078.20 = 7,899,870.80 : x
  2. Step 2: Convert to fraction form
    12,938,718.80/19,408,078.20 = 7,899,870.80/x
  3. Step 3: Cross multiply
    12,938,718.80x = 19,408,078.20 × 7,899,870.80
  4. Step 4: Simplify right side
    12,938,718.80x = 153,321,310,256,296.56
  5. Step 5: Solve for x
    x = 153,321,310,256,296.56/12,938,718.80
  6. Step 6: Final answer
    x = 11,849,806.20

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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.