Home / 14,728.08-20,311.92-9,420.96

Finding the Fourth Proportional to 14,728.08, 20,311.92 and 9,420.96

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Solution

The fourth proportional to 14,728.08, 20,311.92 and 9,420.96 is: 12,992.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,728.08 : 20,311.92 = 9,420.96 : x
  2. Step 2: Convert to fraction form
    14,728.08/20,311.92 = 9,420.96/x
  3. Step 3: Cross multiply
    14,728.08x = 20,311.92 × 9,420.96
  4. Step 4: Simplify right side
    14,728.08x = 191,357,785.84
  5. Step 5: Solve for x
    x = 191,357,785.84/14,728.08
  6. Step 6: Final answer
    x = 12,992.72

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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.