Home / 20,858.96-28,785.20-11,298.63

Finding the Fourth Proportional to 20,858.96, 28,785.20 and 11,298.63

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Solution

The fourth proportional to 20,858.96, 28,785.20 and 11,298.63 is: 15,592.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.96 : 28,785.20 = 11,298.63 : x
  2. Step 2: Convert to fraction form
    20,858.96/28,785.20 = 11,298.63/x
  3. Step 3: Cross multiply
    20,858.96x = 28,785.20 × 11,298.63
  4. Step 4: Simplify right side
    20,858.96x = 325,233,267.78
  5. Step 5: Solve for x
    x = 325,233,267.78/20,858.96
  6. Step 6: Final answer
    x = 15,592.02

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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.