Home / 20,527.96-30,782.70-8,679.28

Finding the Fourth Proportional to 20,527.96, 30,782.70 and 8,679.28

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Solution

The fourth proportional to 20,527.96, 30,782.70 and 8,679.28 is: 13,015.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,527.96 : 30,782.70 = 8,679.28 : x
  2. Step 2: Convert to fraction form
    20,527.96/30,782.70 = 8,679.28/x
  3. Step 3: Cross multiply
    20,527.96x = 30,782.70 × 8,679.28
  4. Step 4: Simplify right side
    20,527.96x = 267,171,672.46
  5. Step 5: Solve for x
    x = 267,171,672.46/20,527.96
  6. Step 6: Final answer
    x = 13,015.01

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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.