Home / 13,830.20-19,039.55-13,194.71

Finding the Fourth Proportional to 13,830.20, 19,039.55 and 13,194.71

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Solution

The fourth proportional to 13,830.20, 19,039.55 and 13,194.71 is: 18,164.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.20 : 19,039.55 = 13,194.71 : x
  2. Step 2: Convert to fraction form
    13,830.20/19,039.55 = 13,194.71/x
  3. Step 3: Cross multiply
    13,830.20x = 19,039.55 × 13,194.71
  4. Step 4: Simplify right side
    13,830.20x = 251,221,358.10
  5. Step 5: Solve for x
    x = 251,221,358.10/13,830.20
  6. Step 6: Final answer
    x = 18,164.69

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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.