Home / 18,945.71-28,426.77-10,170.38

Finding the Fourth Proportional to 18,945.71, 28,426.77 and 10,170.38

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Solution

The fourth proportional to 18,945.71, 28,426.77 and 10,170.38 is: 15,259.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.71 : 28,426.77 = 10,170.38 : x
  2. Step 2: Convert to fraction form
    18,945.71/28,426.77 = 10,170.38/x
  3. Step 3: Cross multiply
    18,945.71x = 28,426.77 × 10,170.38
  4. Step 4: Simplify right side
    18,945.71x = 289,111,053.07
  5. Step 5: Solve for x
    x = 289,111,053.07/18,945.71
  6. Step 6: Final answer
    x = 15,259.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.