Home / 13,151,911.33-18,149,066.75-7,191,208.81

Finding the Fourth Proportional to 13,151,911.33, 18,149,066.75 and 7,191,208.81

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Solution

The fourth proportional to 13,151,911.33, 18,149,066.75 and 7,191,208.81 is: 9,923,556.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151,911.33 : 18,149,066.75 = 7,191,208.81 : x
  2. Step 2: Convert to fraction form
    13,151,911.33/18,149,066.75 = 7,191,208.81/x
  3. Step 3: Cross multiply
    13,151,911.33x = 18,149,066.75 × 7,191,208.81
  4. Step 4: Simplify right side
    13,151,911.33x = 130,513,728,644,453.94
  5. Step 5: Solve for x
    x = 130,513,728,644,453.94/13,151,911.33
  6. Step 6: Final answer
    x = 9,923,556.01

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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.