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Finding the Fourth Proportional to 28,321.65, 42,482.48 and 8,600.38

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Solution

The fourth proportional to 28,321.65, 42,482.48 and 8,600.38 is: 12,900.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.65 : 42,482.48 = 8,600.38 : x
  2. Step 2: Convert to fraction form
    28,321.65/42,482.48 = 8,600.38/x
  3. Step 3: Cross multiply
    28,321.65x = 42,482.48 × 8,600.38
  4. Step 4: Simplify right side
    28,321.65x = 365,365,322.13
  5. Step 5: Solve for x
    x = 365,365,322.13/28,321.65
  6. Step 6: Final answer
    x = 12,900.57

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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.