Home / 20,335.80-30,504.65-7,189.50

Finding the Fourth Proportional to 20,335.80, 30,504.65 and 7,189.50

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Solution

The fourth proportional to 20,335.80, 30,504.65 and 7,189.50 is: 10,784.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.80 : 30,504.65 = 7,189.50 : x
  2. Step 2: Convert to fraction form
    20,335.80/30,504.65 = 7,189.50/x
  3. Step 3: Cross multiply
    20,335.80x = 30,504.65 × 7,189.50
  4. Step 4: Simplify right side
    20,335.80x = 219,313,145.23
  5. Step 5: Solve for x
    x = 219,313,145.23/20,335.80
  6. Step 6: Final answer
    x = 10,784.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.