Home / 12,182.68-18,317.52-11,220.40

Finding the Fourth Proportional to 12,182.68, 18,317.52 and 11,220.40

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Solution

The fourth proportional to 12,182.68, 18,317.52 and 11,220.40 is: 16,870.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,182.68 : 18,317.52 = 11,220.40 : x
  2. Step 2: Convert to fraction form
    12,182.68/18,317.52 = 11,220.40/x
  3. Step 3: Cross multiply
    12,182.68x = 18,317.52 × 11,220.40
  4. Step 4: Simplify right side
    12,182.68x = 205,529,901.41
  5. Step 5: Solve for x
    x = 205,529,901.41/12,182.68
  6. Step 6: Final answer
    x = 16,870.66

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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.