Home / 19,138.91-26,411.54-10,640.79

Finding the Fourth Proportional to 19,138.91, 26,411.54 and 10,640.79

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Solution

The fourth proportional to 19,138.91, 26,411.54 and 10,640.79 is: 14,684.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.91 : 26,411.54 = 10,640.79 : x
  2. Step 2: Convert to fraction form
    19,138.91/26,411.54 = 10,640.79/x
  3. Step 3: Cross multiply
    19,138.91x = 26,411.54 × 10,640.79
  4. Step 4: Simplify right side
    19,138.91x = 281,039,597.51
  5. Step 5: Solve for x
    x = 281,039,597.51/19,138.91
  6. Step 6: Final answer
    x = 14,684.20

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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.