Home / 18,879.28-28,302.51-11,071.69

Finding the Fourth Proportional to 18,879.28, 28,302.51 and 11,071.69

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Solution

The fourth proportional to 18,879.28, 28,302.51 and 11,071.69 is: 16,597.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.28 : 28,302.51 = 11,071.69 : x
  2. Step 2: Convert to fraction form
    18,879.28/28,302.51 = 11,071.69/x
  3. Step 3: Cross multiply
    18,879.28x = 28,302.51 × 11,071.69
  4. Step 4: Simplify right side
    18,879.28x = 313,356,587.70
  5. Step 5: Solve for x
    x = 313,356,587.70/18,879.28
  6. Step 6: Final answer
    x = 16,597.91

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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.