Home / 12,330.60-18,474.30-7,708.20

Finding the Fourth Proportional to 12,330.60, 18,474.30 and 7,708.20

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Solution

The fourth proportional to 12,330.60, 18,474.30 and 7,708.20 is: 11,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.60 : 18,474.30 = 7,708.20 : x
  2. Step 2: Convert to fraction form
    12,330.60/18,474.30 = 7,708.20/x
  3. Step 3: Cross multiply
    12,330.60x = 18,474.30 × 7,708.20
  4. Step 4: Simplify right side
    12,330.60x = 142,403,599.26
  5. Step 5: Solve for x
    x = 142,403,599.26/12,330.60
  6. Step 6: Final answer
    x = 11,548.80

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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.