Home / 18,721.50-28,103.85-9,506.94

Finding the Fourth Proportional to 18,721.50, 28,103.85 and 9,506.94

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Solution

The fourth proportional to 18,721.50, 28,103.85 and 9,506.94 is: 14,271.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.50 : 28,103.85 = 9,506.94 : x
  2. Step 2: Convert to fraction form
    18,721.50/28,103.85 = 9,506.94/x
  3. Step 3: Cross multiply
    18,721.50x = 28,103.85 × 9,506.94
  4. Step 4: Simplify right side
    18,721.50x = 267,181,615.72
  5. Step 5: Solve for x
    x = 267,181,615.72/18,721.50
  6. Step 6: Final answer
    x = 14,271.38

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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.