Home / 13,247,329.14-18,278,634.20-7,739,640.28

Finding the Fourth Proportional to 13,247,329.14, 18,278,634.20 and 7,739,640.28

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Solution

The fourth proportional to 13,247,329.14, 18,278,634.20 and 7,739,640.28 is: 10,679,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247,329.14 : 18,278,634.20 = 7,739,640.28 : x
  2. Step 2: Convert to fraction form
    13,247,329.14/18,278,634.20 = 7,739,640.28/x
  3. Step 3: Cross multiply
    13,247,329.14x = 18,278,634.20 × 7,739,640.28
  4. Step 4: Simplify right side
    13,247,329.14x = 141,470,053,536,128.12
  5. Step 5: Solve for x
    x = 141,470,053,536,128.12/13,247,329.14
  6. Step 6: Final answer
    x = 10,679,137.81

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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.