Home / 12,194.20-18,312.90-9,427.60

Finding the Fourth Proportional to 12,194.20, 18,312.90 and 9,427.60

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Solution

The fourth proportional to 12,194.20, 18,312.90 and 9,427.60 is: 14,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,194.20 : 18,312.90 = 9,427.60 : x
  2. Step 2: Convert to fraction form
    12,194.20/18,312.90 = 9,427.60/x
  3. Step 3: Cross multiply
    12,194.20x = 18,312.90 × 9,427.60
  4. Step 4: Simplify right side
    12,194.20x = 172,646,696.04
  5. Step 5: Solve for x
    x = 172,646,696.04/12,194.20
  6. Step 6: Final answer
    x = 14,158.10

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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.