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Finding the Fourth Proportional to 16,895.80, 25,359.90 and 8,585.20

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Solution

The fourth proportional to 16,895.80, 25,359.90 and 8,585.20 is: 12,886.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,895.80 : 25,359.90 = 8,585.20 : x
  2. Step 2: Convert to fraction form
    16,895.80/25,359.90 = 8,585.20/x
  3. Step 3: Cross multiply
    16,895.80x = 25,359.90 × 8,585.20
  4. Step 4: Simplify right side
    16,895.80x = 217,719,813.48
  5. Step 5: Solve for x
    x = 217,719,813.48/16,895.80
  6. Step 6: Final answer
    x = 12,886.03

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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.