Home / 26,139.06-36,075-15,528.78

Finding the Fourth Proportional to 26,139.06, 36,075 and 15,528.78

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Solution

The fourth proportional to 26,139.06, 36,075 and 15,528.78 is: 21,431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,139.06 : 36,075 = 15,528.78 : x
  2. Step 2: Convert to fraction form
    26,139.06/36,075 = 15,528.78/x
  3. Step 3: Cross multiply
    26,139.06x = 36,075 × 15,528.78
  4. Step 4: Simplify right side
    26,139.06x = 560,200,738.50
  5. Step 5: Solve for x
    x = 560,200,738.50/26,139.06
  6. Step 6: Final answer
    x = 21,431.56

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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.