Home / 28,109.94-38,785.99-16,775.81

Finding the Fourth Proportional to 28,109.94, 38,785.99 and 16,775.81

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Solution

The fourth proportional to 28,109.94, 38,785.99 and 16,775.81 is: 23,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.94 : 38,785.99 = 16,775.81 : x
  2. Step 2: Convert to fraction form
    28,109.94/38,785.99 = 16,775.81/x
  3. Step 3: Cross multiply
    28,109.94x = 38,785.99 × 16,775.81
  4. Step 4: Simplify right side
    28,109.94x = 650,666,339.93
  5. Step 5: Solve for x
    x = 650,666,339.93/28,109.94
  6. Step 6: Final answer
    x = 23,147.20

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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.