Home / 13,938.11-20,907.35-4,077.57

Finding the Fourth Proportional to 13,938.11, 20,907.35 and 4,077.57

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Solution

The fourth proportional to 13,938.11, 20,907.35 and 4,077.57 is: 6,116.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.11 : 20,907.35 = 4,077.57 : x
  2. Step 2: Convert to fraction form
    13,938.11/20,907.35 = 4,077.57/x
  3. Step 3: Cross multiply
    13,938.11x = 20,907.35 × 4,077.57
  4. Step 4: Simplify right side
    13,938.11x = 85,251,162.75
  5. Step 5: Solve for x
    x = 85,251,162.75/13,938.11
  6. Step 6: Final answer
    x = 6,116.41

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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.