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Finding the Fourth Proportional to 15,271.80, 22,922.10 and 9,439.80

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Solution

The fourth proportional to 15,271.80, 22,922.10 and 9,439.80 is: 14,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.80 : 22,922.10 = 9,439.80 : x
  2. Step 2: Convert to fraction form
    15,271.80/22,922.10 = 9,439.80/x
  3. Step 3: Cross multiply
    15,271.80x = 22,922.10 × 9,439.80
  4. Step 4: Simplify right side
    15,271.80x = 216,380,039.58
  5. Step 5: Solve for x
    x = 216,380,039.58/15,271.80
  6. Step 6: Final answer
    x = 14,168.60

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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.