Home / 18,139.39-25,037.57-10,969.31

Finding the Fourth Proportional to 18,139.39, 25,037.57 and 10,969.31

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Solution

The fourth proportional to 18,139.39, 25,037.57 and 10,969.31 is: 15,140.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.39 : 25,037.57 = 10,969.31 : x
  2. Step 2: Convert to fraction form
    18,139.39/25,037.57 = 10,969.31/x
  3. Step 3: Cross multiply
    18,139.39x = 25,037.57 × 10,969.31
  4. Step 4: Simplify right side
    18,139.39x = 274,644,956.99
  5. Step 5: Solve for x
    x = 274,644,956.99/18,139.39
  6. Step 6: Final answer
    x = 15,140.81

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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.