Home / 12,145.60-18,227.40-6,299.20

Finding the Fourth Proportional to 12,145.60, 18,227.40 and 6,299.20

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Solution

The fourth proportional to 12,145.60, 18,227.40 and 6,299.20 is: 9,453.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.60 : 18,227.40 = 6,299.20 : x
  2. Step 2: Convert to fraction form
    12,145.60/18,227.40 = 6,299.20/x
  3. Step 3: Cross multiply
    12,145.60x = 18,227.40 × 6,299.20
  4. Step 4: Simplify right side
    12,145.60x = 114,818,038.08
  5. Step 5: Solve for x
    x = 114,818,038.08/12,145.60
  6. Step 6: Final answer
    x = 9,453.47

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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.