Home / 18,930.08-26,121.84-10,969.76

Finding the Fourth Proportional to 18,930.08, 26,121.84 and 10,969.76

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Solution

The fourth proportional to 18,930.08, 26,121.84 and 10,969.76 is: 15,137.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.08 : 26,121.84 = 10,969.76 : x
  2. Step 2: Convert to fraction form
    18,930.08/26,121.84 = 10,969.76/x
  3. Step 3: Cross multiply
    18,930.08x = 26,121.84 × 10,969.76
  4. Step 4: Simplify right side
    18,930.08x = 286,550,315.56
  5. Step 5: Solve for x
    x = 286,550,315.56/18,930.08
  6. Step 6: Final answer
    x = 15,137.30

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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.