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Finding the Fourth Proportional to 28,482.66, 42,689.03 and 20,165.04

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Solution

The fourth proportional to 28,482.66, 42,689.03 and 20,165.04 is: 30,222.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,482.66 : 42,689.03 = 20,165.04 : x
  2. Step 2: Convert to fraction form
    28,482.66/42,689.03 = 20,165.04/x
  3. Step 3: Cross multiply
    28,482.66x = 42,689.03 × 20,165.04
  4. Step 4: Simplify right side
    28,482.66x = 860,825,896.69
  5. Step 5: Solve for x
    x = 860,825,896.69/28,482.66
  6. Step 6: Final answer
    x = 30,222.81

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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.