Home / 28,193.12-42,290.16-10,671.20

Finding the Fourth Proportional to 28,193.12, 42,290.16 and 10,671.20

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Solution

The fourth proportional to 28,193.12, 42,290.16 and 10,671.20 is: 16,006.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,193.12 : 42,290.16 = 10,671.20 : x
  2. Step 2: Convert to fraction form
    28,193.12/42,290.16 = 10,671.20/x
  3. Step 3: Cross multiply
    28,193.12x = 42,290.16 × 10,671.20
  4. Step 4: Simplify right side
    28,193.12x = 451,286,755.39
  5. Step 5: Solve for x
    x = 451,286,755.39/28,193.12
  6. Step 6: Final answer
    x = 16,006.98

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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.