Home / 16,878.85-25,318.20-9,378.88

Finding the Fourth Proportional to 16,878.85, 25,318.20 and 9,378.88

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Solution

The fourth proportional to 16,878.85, 25,318.20 and 9,378.88 is: 14,068.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,878.85 : 25,318.20 = 9,378.88 : x
  2. Step 2: Convert to fraction form
    16,878.85/25,318.20 = 9,378.88/x
  3. Step 3: Cross multiply
    16,878.85x = 25,318.20 × 9,378.88
  4. Step 4: Simplify right side
    16,878.85x = 237,456,359.62
  5. Step 5: Solve for x
    x = 237,456,359.62/16,878.85
  6. Step 6: Final answer
    x = 14,068.28

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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.