Home / 10,912.20-16,368.30-7,218.60

Finding the Fourth Proportional to 10,912.20, 16,368.30 and 7,218.60

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Solution

The fourth proportional to 10,912.20, 16,368.30 and 7,218.60 is: 10,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.20 : 16,368.30 = 7,218.60 : x
  2. Step 2: Convert to fraction form
    10,912.20/16,368.30 = 7,218.60/x
  3. Step 3: Cross multiply
    10,912.20x = 16,368.30 × 7,218.60
  4. Step 4: Simplify right side
    10,912.20x = 118,156,210.38
  5. Step 5: Solve for x
    x = 118,156,210.38/10,912.20
  6. Step 6: Final answer
    x = 10,827.90

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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.