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Finding the Fourth Proportional to 28,227.98, 42,341.98 and 7,169.60

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Solution

The fourth proportional to 28,227.98, 42,341.98 and 7,169.60 is: 10,754.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227.98 : 42,341.98 = 7,169.60 : x
  2. Step 2: Convert to fraction form
    28,227.98/42,341.98 = 7,169.60/x
  3. Step 3: Cross multiply
    28,227.98x = 42,341.98 × 7,169.60
  4. Step 4: Simplify right side
    28,227.98x = 303,575,059.81
  5. Step 5: Solve for x
    x = 303,575,059.81/28,227.98
  6. Step 6: Final answer
    x = 10,754.40

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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.