Home / 12,114.40-18,158.55-5,861.20

Finding the Fourth Proportional to 12,114.40, 18,158.55 and 5,861.20

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Solution

The fourth proportional to 12,114.40, 18,158.55 and 5,861.20 is: 8,785.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,114.40 : 18,158.55 = 5,861.20 : x
  2. Step 2: Convert to fraction form
    12,114.40/18,158.55 = 5,861.20/x
  3. Step 3: Cross multiply
    12,114.40x = 18,158.55 × 5,861.20
  4. Step 4: Simplify right side
    12,114.40x = 106,430,893.26
  5. Step 5: Solve for x
    x = 106,430,893.26/12,114.40
  6. Step 6: Final answer
    x = 8,785.49

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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.