Home / 20,548.96-28,360.26-15,258.88

Finding the Fourth Proportional to 20,548.96, 28,360.26 and 15,258.88

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Solution

The fourth proportional to 20,548.96, 28,360.26 and 15,258.88 is: 21,059.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.96 : 28,360.26 = 15,258.88 : x
  2. Step 2: Convert to fraction form
    20,548.96/28,360.26 = 15,258.88/x
  3. Step 3: Cross multiply
    20,548.96x = 28,360.26 × 15,258.88
  4. Step 4: Simplify right side
    20,548.96x = 432,745,804.11
  5. Step 5: Solve for x
    x = 432,745,804.11/20,548.96
  6. Step 6: Final answer
    x = 21,059.26

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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.