Home / 20,461.55-30,511.61-17,972.92

Finding the Fourth Proportional to 20,461.55, 30,511.61 and 17,972.92

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Solution

The fourth proportional to 20,461.55, 30,511.61 and 17,972.92 is: 26,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.55 : 30,511.61 = 17,972.92 : x
  2. Step 2: Convert to fraction form
    20,461.55/30,511.61 = 17,972.92/x
  3. Step 3: Cross multiply
    20,461.55x = 30,511.61 × 17,972.92
  4. Step 4: Simplify right side
    20,461.55x = 548,382,741.27
  5. Step 5: Solve for x
    x = 548,382,741.27/20,461.55
  6. Step 6: Final answer
    x = 26,800.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.