Home / 18,736.89-25,856.87-10,780.68

Finding the Fourth Proportional to 18,736.89, 25,856.87 and 10,780.68

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Solution

The fourth proportional to 18,736.89, 25,856.87 and 10,780.68 is: 14,877.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.89 : 25,856.87 = 10,780.68 : x
  2. Step 2: Convert to fraction form
    18,736.89/25,856.87 = 10,780.68/x
  3. Step 3: Cross multiply
    18,736.89x = 25,856.87 × 10,780.68
  4. Step 4: Simplify right side
    18,736.89x = 278,754,587.37
  5. Step 5: Solve for x
    x = 278,754,587.37/18,736.89
  6. Step 6: Final answer
    x = 14,877.31

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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.