Home / 19,138.39-26,404.89-11,582.31

Finding the Fourth Proportional to 19,138.39, 26,404.89 and 11,582.31

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Solution

The fourth proportional to 19,138.39, 26,404.89 and 11,582.31 is: 15,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.39 : 26,404.89 = 11,582.31 : x
  2. Step 2: Convert to fraction form
    19,138.39/26,404.89 = 11,582.31/x
  3. Step 3: Cross multiply
    19,138.39x = 26,404.89 × 11,582.31
  4. Step 4: Simplify right side
    19,138.39x = 305,829,528.55
  5. Step 5: Solve for x
    x = 305,829,528.55/19,138.39
  6. Step 6: Final answer
    x = 15,979.90

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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.