Home / 20,261.28-30,405.50-7,113.69

Finding the Fourth Proportional to 20,261.28, 30,405.50 and 7,113.69

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Solution

The fourth proportional to 20,261.28, 30,405.50 and 7,113.69 is: 10,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.28 : 30,405.50 = 7,113.69 : x
  2. Step 2: Convert to fraction form
    20,261.28/30,405.50 = 7,113.69/x
  3. Step 3: Cross multiply
    20,261.28x = 30,405.50 × 7,113.69
  4. Step 4: Simplify right side
    20,261.28x = 216,295,301.30
  5. Step 5: Solve for x
    x = 216,295,301.30/20,261.28
  6. Step 6: Final answer
    x = 10,675.30

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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.