Home / 20,655.28-30,977.40-8,965.76

Finding the Fourth Proportional to 20,655.28, 30,977.40 and 8,965.76

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Solution

The fourth proportional to 20,655.28, 30,977.40 and 8,965.76 is: 13,446.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.28 : 30,977.40 = 8,965.76 : x
  2. Step 2: Convert to fraction form
    20,655.28/30,977.40 = 8,965.76/x
  3. Step 3: Cross multiply
    20,655.28x = 30,977.40 × 8,965.76
  4. Step 4: Simplify right side
    20,655.28x = 277,735,933.82
  5. Step 5: Solve for x
    x = 277,735,933.82/20,655.28
  6. Step 6: Final answer
    x = 13,446.24

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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.