Home / 19,138.69-26,412.58-10,640.88

Finding the Fourth Proportional to 19,138.69, 26,412.58 and 10,640.88

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Solution

The fourth proportional to 19,138.69, 26,412.58 and 10,640.88 is: 14,685.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.69 : 26,412.58 = 10,640.88 : x
  2. Step 2: Convert to fraction form
    19,138.69/26,412.58 = 10,640.88/x
  3. Step 3: Cross multiply
    19,138.69x = 26,412.58 × 10,640.88
  4. Step 4: Simplify right side
    19,138.69x = 281,053,107.57
  5. Step 5: Solve for x
    x = 281,053,107.57/19,138.69
  6. Step 6: Final answer
    x = 14,685.07

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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.