Home / 16,877.20-25,315.80-12,211.60

Finding the Fourth Proportional to 16,877.20, 25,315.80 and 12,211.60

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Solution

The fourth proportional to 16,877.20, 25,315.80 and 12,211.60 is: 18,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,877.20 : 25,315.80 = 12,211.60 : x
  2. Step 2: Convert to fraction form
    16,877.20/25,315.80 = 12,211.60/x
  3. Step 3: Cross multiply
    16,877.20x = 25,315.80 × 12,211.60
  4. Step 4: Simplify right side
    16,877.20x = 309,146,423.28
  5. Step 5: Solve for x
    x = 309,146,423.28/16,877.20
  6. Step 6: Final answer
    x = 18,317.40

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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.