Home / 20,087.87-30,133.89-6,938.55

Finding the Fourth Proportional to 20,087.87, 30,133.89 and 6,938.55

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Solution

The fourth proportional to 20,087.87, 30,133.89 and 6,938.55 is: 10,408.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.87 : 30,133.89 = 6,938.55 : x
  2. Step 2: Convert to fraction form
    20,087.87/30,133.89 = 6,938.55/x
  3. Step 3: Cross multiply
    20,087.87x = 30,133.89 × 6,938.55
  4. Step 4: Simplify right side
    20,087.87x = 209,085,502.46
  5. Step 5: Solve for x
    x = 209,085,502.46/20,087.87
  6. Step 6: Final answer
    x = 10,408.55

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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.