Home / 10,920.06-16,382.66-3,128.67

Finding the Fourth Proportional to 10,920.06, 16,382.66 and 3,128.67

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Solution

The fourth proportional to 10,920.06, 16,382.66 and 3,128.67 is: 4,693.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.06 : 16,382.66 = 3,128.67 : x
  2. Step 2: Convert to fraction form
    10,920.06/16,382.66 = 3,128.67/x
  3. Step 3: Cross multiply
    10,920.06x = 16,382.66 × 3,128.67
  4. Step 4: Simplify right side
    10,920.06x = 51,255,921.22
  5. Step 5: Solve for x
    x = 51,255,921.22/10,920.06
  6. Step 6: Final answer
    x = 4,693.74

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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.