Home / 18,941.72-28,420.77-10,166.38

Finding the Fourth Proportional to 18,941.72, 28,420.77 and 10,166.38

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Solution

The fourth proportional to 18,941.72, 28,420.77 and 10,166.38 is: 15,253.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.72 : 28,420.77 = 10,166.38 : x
  2. Step 2: Convert to fraction form
    18,941.72/28,420.77 = 10,166.38/x
  3. Step 3: Cross multiply
    18,941.72x = 28,420.77 × 10,166.38
  4. Step 4: Simplify right side
    18,941.72x = 288,936,347.71
  5. Step 5: Solve for x
    x = 288,936,347.71/18,941.72
  6. Step 6: Final answer
    x = 15,253.97

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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.