Home / 13,878.99-19,155.03-7,911.27

Finding the Fourth Proportional to 13,878.99, 19,155.03 and 7,911.27

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Solution

The fourth proportional to 13,878.99, 19,155.03 and 7,911.27 is: 10,918.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.99 : 19,155.03 = 7,911.27 : x
  2. Step 2: Convert to fraction form
    13,878.99/19,155.03 = 7,911.27/x
  3. Step 3: Cross multiply
    13,878.99x = 19,155.03 × 7,911.27
  4. Step 4: Simplify right side
    13,878.99x = 151,540,614.19
  5. Step 5: Solve for x
    x = 151,540,614.19/13,878.99
  6. Step 6: Final answer
    x = 10,918.71

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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.