Home / 13,028.12-17,985.01-8,728.62

Finding the Fourth Proportional to 13,028.12, 17,985.01 and 8,728.62

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Solution

The fourth proportional to 13,028.12, 17,985.01 and 8,728.62 is: 12,049.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,028.12 : 17,985.01 = 8,728.62 : x
  2. Step 2: Convert to fraction form
    13,028.12/17,985.01 = 8,728.62/x
  3. Step 3: Cross multiply
    13,028.12x = 17,985.01 × 8,728.62
  4. Step 4: Simplify right side
    13,028.12x = 156,984,184.42
  5. Step 5: Solve for x
    x = 156,984,184.42/13,028.12
  6. Step 6: Final answer
    x = 12,049.64

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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.