Home / 13,156,914.12-18,155,619.77-7,649,898.28

Finding the Fourth Proportional to 13,156,914.12, 18,155,619.77 and 7,649,898.28

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Solution

The fourth proportional to 13,156,914.12, 18,155,619.77 and 7,649,898.28 is: 10,556,323.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156,914.12 : 18,155,619.77 = 7,649,898.28 : x
  2. Step 2: Convert to fraction form
    13,156,914.12/18,155,619.77 = 7,649,898.28/x
  3. Step 3: Cross multiply
    13,156,914.12x = 18,155,619.77 × 7,649,898.28
  4. Step 4: Simplify right side
    13,156,914.12x = 138,888,644,450,857
  5. Step 5: Solve for x
    x = 138,888,644,450,857/13,156,914.12
  6. Step 6: Final answer
    x = 10,556,323.71

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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.