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Finding the Fourth Proportional to 14,740.80, 22,111.20 and 9,211.20

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Solution

The fourth proportional to 14,740.80, 22,111.20 and 9,211.20 is: 13,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,740.80 : 22,111.20 = 9,211.20 : x
  2. Step 2: Convert to fraction form
    14,740.80/22,111.20 = 9,211.20/x
  3. Step 3: Cross multiply
    14,740.80x = 22,111.20 × 9,211.20
  4. Step 4: Simplify right side
    14,740.80x = 203,670,685.44
  5. Step 5: Solve for x
    x = 203,670,685.44/14,740.80
  6. Step 6: Final answer
    x = 13,816.80

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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.