Home / 20,335.05-30,503.52-7,188.75

Finding the Fourth Proportional to 20,335.05, 30,503.52 and 7,188.75

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Solution

The fourth proportional to 20,335.05, 30,503.52 and 7,188.75 is: 10,783.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.05 : 30,503.52 = 7,188.75 : x
  2. Step 2: Convert to fraction form
    20,335.05/30,503.52 = 7,188.75/x
  3. Step 3: Cross multiply
    20,335.05x = 30,503.52 × 7,188.75
  4. Step 4: Simplify right side
    20,335.05x = 219,282,179.40
  5. Step 5: Solve for x
    x = 219,282,179.40/20,335.05
  6. Step 6: Final answer
    x = 10,783.46

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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.