Home / 28,589.21-42,887.97-8,869.34

Finding the Fourth Proportional to 28,589.21, 42,887.97 and 8,869.34

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Solution

The fourth proportional to 28,589.21, 42,887.97 and 8,869.34 is: 13,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,589.21 : 42,887.97 = 8,869.34 : x
  2. Step 2: Convert to fraction form
    28,589.21/42,887.97 = 8,869.34/x
  3. Step 3: Cross multiply
    28,589.21x = 42,887.97 × 8,869.34
  4. Step 4: Simplify right side
    28,589.21x = 380,387,987.84
  5. Step 5: Solve for x
    x = 380,387,987.84/28,589.21
  6. Step 6: Final answer
    x = 13,305.30

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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.