Home / 12,012.95-18,015.53-4,005.59

Finding the Fourth Proportional to 12,012.95, 18,015.53 and 4,005.59

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Solution

The fourth proportional to 12,012.95, 18,015.53 and 4,005.59 is: 6,007.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012.95 : 18,015.53 = 4,005.59 : x
  2. Step 2: Convert to fraction form
    12,012.95/18,015.53 = 4,005.59/x
  3. Step 3: Cross multiply
    12,012.95x = 18,015.53 × 4,005.59
  4. Step 4: Simplify right side
    12,012.95x = 72,162,716.71
  5. Step 5: Solve for x
    x = 72,162,716.71/12,012.95
  6. Step 6: Final answer
    x = 6,007.08

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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.