Home / 28,498.26-42,747.39-7,721.76

Finding the Fourth Proportional to 28,498.26, 42,747.39 and 7,721.76

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Solution

The fourth proportional to 28,498.26, 42,747.39 and 7,721.76 is: 11,582.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,498.26 : 42,747.39 = 7,721.76 : x
  2. Step 2: Convert to fraction form
    28,498.26/42,747.39 = 7,721.76/x
  3. Step 3: Cross multiply
    28,498.26x = 42,747.39 × 7,721.76
  4. Step 4: Simplify right side
    28,498.26x = 330,085,086.21
  5. Step 5: Solve for x
    x = 330,085,086.21/28,498.26
  6. Step 6: Final answer
    x = 11,582.64

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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.