Home / 12,330.60-18,485.10-7,402.20

Finding the Fourth Proportional to 12,330.60, 18,485.10 and 7,402.20

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Solution

The fourth proportional to 12,330.60, 18,485.10 and 7,402.20 is: 11,096.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.60 : 18,485.10 = 7,402.20 : x
  2. Step 2: Convert to fraction form
    12,330.60/18,485.10 = 7,402.20/x
  3. Step 3: Cross multiply
    12,330.60x = 18,485.10 × 7,402.20
  4. Step 4: Simplify right side
    12,330.60x = 136,830,407.22
  5. Step 5: Solve for x
    x = 136,830,407.22/12,330.60
  6. Step 6: Final answer
    x = 11,096.82

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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.