Home / 13,729,900.78-18,947,263.02-7,619,312.62

Finding the Fourth Proportional to 13,729,900.78, 18,947,263.02 and 7,619,312.62

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Solution

The fourth proportional to 13,729,900.78, 18,947,263.02 and 7,619,312.62 is: 10,514,651.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729,900.78 : 18,947,263.02 = 7,619,312.62 : x
  2. Step 2: Convert to fraction form
    13,729,900.78/18,947,263.02 = 7,619,312.62/x
  3. Step 3: Cross multiply
    13,729,900.78x = 18,947,263.02 × 7,619,312.62
  4. Step 4: Simplify right side
    13,729,900.78x = 144,365,120,242,745.31
  5. Step 5: Solve for x
    x = 144,365,120,242,745.31/13,729,900.78
  6. Step 6: Final answer
    x = 10,514,651.38

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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.