Home / 13,750.32-20,620.35-5,427.57

Finding the Fourth Proportional to 13,750.32, 20,620.35 and 5,427.57

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Solution

The fourth proportional to 13,750.32, 20,620.35 and 5,427.57 is: 8,139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.32 : 20,620.35 = 5,427.57 : x
  2. Step 2: Convert to fraction form
    13,750.32/20,620.35 = 5,427.57/x
  3. Step 3: Cross multiply
    13,750.32x = 20,620.35 × 5,427.57
  4. Step 4: Simplify right side
    13,750.32x = 111,918,393.05
  5. Step 5: Solve for x
    x = 111,918,393.05/13,750.32
  6. Step 6: Final answer
    x = 8,139.33

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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.