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Finding the Fourth Proportional to 14,653.72, 20,222.06 and 7,939.30

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Solution

The fourth proportional to 14,653.72, 20,222.06 and 7,939.30 is: 10,956.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653.72 : 20,222.06 = 7,939.30 : x
  2. Step 2: Convert to fraction form
    14,653.72/20,222.06 = 7,939.30/x
  3. Step 3: Cross multiply
    14,653.72x = 20,222.06 × 7,939.30
  4. Step 4: Simplify right side
    14,653.72x = 160,549,000.96
  5. Step 5: Solve for x
    x = 160,549,000.96/14,653.72
  6. Step 6: Final answer
    x = 10,956.19

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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.