Home / 13,609.02-18,766.62-12,815.30

Finding the Fourth Proportional to 13,609.02, 18,766.62 and 12,815.30

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Solution

The fourth proportional to 13,609.02, 18,766.62 and 12,815.30 is: 17,672.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.02 : 18,766.62 = 12,815.30 : x
  2. Step 2: Convert to fraction form
    13,609.02/18,766.62 = 12,815.30/x
  3. Step 3: Cross multiply
    13,609.02x = 18,766.62 × 12,815.30
  4. Step 4: Simplify right side
    13,609.02x = 240,499,865.29
  5. Step 5: Solve for x
    x = 240,499,865.29/13,609.02
  6. Step 6: Final answer
    x = 17,672.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.