Home / 30,335.68-41,879.76-20,954.72

Finding the Fourth Proportional to 30,335.68, 41,879.76 and 20,954.72

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Solution

The fourth proportional to 30,335.68, 41,879.76 and 20,954.72 is: 28,928.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,335.68 : 41,879.76 = 20,954.72 : x
  2. Step 2: Convert to fraction form
    30,335.68/41,879.76 = 20,954.72/x
  3. Step 3: Cross multiply
    30,335.68x = 41,879.76 × 20,954.72
  4. Step 4: Simplify right side
    30,335.68x = 877,578,644.47
  5. Step 5: Solve for x
    x = 877,578,644.47/30,335.68
  6. Step 6: Final answer
    x = 28,928.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.