Home / 20,906.76-28,852.02-11,475.84

Finding the Fourth Proportional to 20,906.76, 28,852.02 and 11,475.84

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Solution

The fourth proportional to 20,906.76, 28,852.02 and 11,475.84 is: 15,837.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.76 : 28,852.02 = 11,475.84 : x
  2. Step 2: Convert to fraction form
    20,906.76/28,852.02 = 11,475.84/x
  3. Step 3: Cross multiply
    20,906.76x = 28,852.02 × 11,475.84
  4. Step 4: Simplify right side
    20,906.76x = 331,101,165.20
  5. Step 5: Solve for x
    x = 331,101,165.20/20,906.76
  6. Step 6: Final answer
    x = 15,837.04

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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.