Home / 14,247.92-21,379.18-6,455.72

Finding the Fourth Proportional to 14,247.92, 21,379.18 and 6,455.72

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Solution

The fourth proportional to 14,247.92, 21,379.18 and 6,455.72 is: 9,686.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,247.92 : 21,379.18 = 6,455.72 : x
  2. Step 2: Convert to fraction form
    14,247.92/21,379.18 = 6,455.72/x
  3. Step 3: Cross multiply
    14,247.92x = 21,379.18 × 6,455.72
  4. Step 4: Simplify right side
    14,247.92x = 138,017,999.91
  5. Step 5: Solve for x
    x = 138,017,999.91/14,247.92
  6. Step 6: Final answer
    x = 9,686.89

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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.