Home / 20,735.32-28,548.12-18,455.80

Finding the Fourth Proportional to 20,735.32, 28,548.12 and 18,455.80

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Solution

The fourth proportional to 20,735.32, 28,548.12 and 18,455.80 is: 25,409.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.32 : 28,548.12 = 18,455.80 : x
  2. Step 2: Convert to fraction form
    20,735.32/28,548.12 = 18,455.80/x
  3. Step 3: Cross multiply
    20,735.32x = 28,548.12 × 18,455.80
  4. Step 4: Simplify right side
    20,735.32x = 526,878,393.10
  5. Step 5: Solve for x
    x = 526,878,393.10/20,735.32
  6. Step 6: Final answer
    x = 25,409.71

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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.