Home / 12,005.96-18,006.84-5,430.60

Finding the Fourth Proportional to 12,005.96, 18,006.84 and 5,430.60

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Solution

The fourth proportional to 12,005.96, 18,006.84 and 5,430.60 is: 8,144.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.96 : 18,006.84 = 5,430.60 : x
  2. Step 2: Convert to fraction form
    12,005.96/18,006.84 = 5,430.60/x
  3. Step 3: Cross multiply
    12,005.96x = 18,006.84 × 5,430.60
  4. Step 4: Simplify right side
    12,005.96x = 97,787,945.30
  5. Step 5: Solve for x
    x = 97,787,945.30/12,005.96
  6. Step 6: Final answer
    x = 8,144.95

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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.