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Finding the Fourth Proportional to 28,051.80, 42,004.80 and 22,171.20

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Solution

The fourth proportional to 28,051.80, 42,004.80 and 22,171.20 is: 33,199.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.80 : 42,004.80 = 22,171.20 : x
  2. Step 2: Convert to fraction form
    28,051.80/42,004.80 = 22,171.20/x
  3. Step 3: Cross multiply
    28,051.80x = 42,004.80 × 22,171.20
  4. Step 4: Simplify right side
    28,051.80x = 931,296,821.76
  5. Step 5: Solve for x
    x = 931,296,821.76/28,051.80
  6. Step 6: Final answer
    x = 33,199.18

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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.