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Finding the Fourth Proportional to 11,443.60, 17,136.60 and 7,526.80

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Solution

The fourth proportional to 11,443.60, 17,136.60 and 7,526.80 is: 11,271.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,443.60 : 17,136.60 = 7,526.80 : x
  2. Step 2: Convert to fraction form
    11,443.60/17,136.60 = 7,526.80/x
  3. Step 3: Cross multiply
    11,443.60x = 17,136.60 × 7,526.80
  4. Step 4: Simplify right side
    11,443.60x = 128,983,760.88
  5. Step 5: Solve for x
    x = 128,983,760.88/11,443.60
  6. Step 6: Final answer
    x = 11,271.26

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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.