Home / 12,328.30-18,528.90-12,109.60

Finding the Fourth Proportional to 12,328.30, 18,528.90 and 12,109.60

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Solution

The fourth proportional to 12,328.30, 18,528.90 and 12,109.60 is: 18,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.30 : 18,528.90 = 12,109.60 : x
  2. Step 2: Convert to fraction form
    12,328.30/18,528.90 = 12,109.60/x
  3. Step 3: Cross multiply
    12,328.30x = 18,528.90 × 12,109.60
  4. Step 4: Simplify right side
    12,328.30x = 224,377,567.44
  5. Step 5: Solve for x
    x = 224,377,567.44/12,328.30
  6. Step 6: Final answer
    x = 18,200.20

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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.