Home / 18,919.68-26,109.17-10,966.52

Finding the Fourth Proportional to 18,919.68, 26,109.17 and 10,966.52

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Solution

The fourth proportional to 18,919.68, 26,109.17 and 10,966.52 is: 15,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.68 : 26,109.17 = 10,966.52 : x
  2. Step 2: Convert to fraction form
    18,919.68/26,109.17 = 10,966.52/x
  3. Step 3: Cross multiply
    18,919.68x = 26,109.17 × 10,966.52
  4. Step 4: Simplify right side
    18,919.68x = 286,326,745.43
  5. Step 5: Solve for x
    x = 286,326,745.43/18,919.68
  6. Step 6: Final answer
    x = 15,133.80

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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.