Home / 20,738.04-28,619.04-12,785.52

Finding the Fourth Proportional to 20,738.04, 28,619.04 and 12,785.52

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Solution

The fourth proportional to 20,738.04, 28,619.04 and 12,785.52 is: 17,644.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.04 : 28,619.04 = 12,785.52 : x
  2. Step 2: Convert to fraction form
    20,738.04/28,619.04 = 12,785.52/x
  3. Step 3: Cross multiply
    20,738.04x = 28,619.04 × 12,785.52
  4. Step 4: Simplify right side
    20,738.04x = 365,909,308.30
  5. Step 5: Solve for x
    x = 365,909,308.30/20,738.04
  6. Step 6: Final answer
    x = 17,644.35

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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.