Home / 12,489.04-18,728.30-5,088.44

Finding the Fourth Proportional to 12,489.04, 18,728.30 and 5,088.44

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Solution

The fourth proportional to 12,489.04, 18,728.30 and 5,088.44 is: 7,630.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.04 : 18,728.30 = 5,088.44 : x
  2. Step 2: Convert to fraction form
    12,489.04/18,728.30 = 5,088.44/x
  3. Step 3: Cross multiply
    12,489.04x = 18,728.30 × 5,088.44
  4. Step 4: Simplify right side
    12,489.04x = 95,297,830.85
  5. Step 5: Solve for x
    x = 95,297,830.85/12,489.04
  6. Step 6: Final answer
    x = 7,630.52

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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.