Home / 18,738.07-25,859.69-10,780.11

Finding the Fourth Proportional to 18,738.07, 25,859.69 and 10,780.11

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Solution

The fourth proportional to 18,738.07, 25,859.69 and 10,780.11 is: 14,877.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.07 : 25,859.69 = 10,780.11 : x
  2. Step 2: Convert to fraction form
    18,738.07/25,859.69 = 10,780.11/x
  3. Step 3: Cross multiply
    18,738.07x = 25,859.69 × 10,780.11
  4. Step 4: Simplify right side
    18,738.07x = 278,770,302.77
  5. Step 5: Solve for x
    x = 278,770,302.77/18,738.07
  6. Step 6: Final answer
    x = 14,877.22

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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.