Home / 12,009.45-18,001.86-4,993.53

Finding the Fourth Proportional to 12,009.45, 18,001.86 and 4,993.53

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Solution

The fourth proportional to 12,009.45, 18,001.86 and 4,993.53 is: 7,485.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.45 : 18,001.86 = 4,993.53 : x
  2. Step 2: Convert to fraction form
    12,009.45/18,001.86 = 4,993.53/x
  3. Step 3: Cross multiply
    12,009.45x = 18,001.86 × 4,993.53
  4. Step 4: Simplify right side
    12,009.45x = 89,892,827.97
  5. Step 5: Solve for x
    x = 89,892,827.97/12,009.45
  6. Step 6: Final answer
    x = 7,485.17

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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.