Home / 13,121,999.70-18,108,370.94-7,320,782.63

Finding the Fourth Proportional to 13,121,999.70, 18,108,370.94 and 7,320,782.63

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Solution

The fourth proportional to 13,121,999.70, 18,108,370.94 and 7,320,782.63 is: 10,102,686.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,999.70 : 18,108,370.94 = 7,320,782.63 : x
  2. Step 2: Convert to fraction form
    13,121,999.70/18,108,370.94 = 7,320,782.63/x
  3. Step 3: Cross multiply
    13,121,999.70x = 18,108,370.94 × 7,320,782.63
  4. Step 4: Simplify right side
    13,121,999.70x = 132,567,447,443,815.78
  5. Step 5: Solve for x
    x = 132,567,447,443,815.78/13,121,999.70
  6. Step 6: Final answer
    x = 10,102,686.37

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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.