Home / 18,945.36-28,426.20-10,170

Finding the Fourth Proportional to 18,945.36, 28,426.20 and 10,170

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Solution

The fourth proportional to 18,945.36, 28,426.20 and 10,170 is: 15,259.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.36 : 28,426.20 = 10,170 : x
  2. Step 2: Convert to fraction form
    18,945.36/28,426.20 = 10,170/x
  3. Step 3: Cross multiply
    18,945.36x = 28,426.20 × 10,170
  4. Step 4: Simplify right side
    18,945.36x = 289,094,454
  5. Step 5: Solve for x
    x = 289,094,454/18,945.36
  6. Step 6: Final answer
    x = 15,259.38

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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.