Home / 14,830.28-20,465.68-8,115.78

Finding the Fourth Proportional to 14,830.28, 20,465.68 and 8,115.78

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Solution

The fourth proportional to 14,830.28, 20,465.68 and 8,115.78 is: 11,199.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,830.28 : 20,465.68 = 8,115.78 : x
  2. Step 2: Convert to fraction form
    14,830.28/20,465.68 = 8,115.78/x
  3. Step 3: Cross multiply
    14,830.28x = 20,465.68 × 8,115.78
  4. Step 4: Simplify right side
    14,830.28x = 166,094,956.43
  5. Step 5: Solve for x
    x = 166,094,956.43/14,830.28
  6. Step 6: Final answer
    x = 11,199.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.