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Finding the Fourth Proportional to 14,653.74, 20,222.15 and 7,939.39

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Solution

The fourth proportional to 14,653.74, 20,222.15 and 7,939.39 is: 10,956.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653.74 : 20,222.15 = 7,939.39 : x
  2. Step 2: Convert to fraction form
    14,653.74/20,222.15 = 7,939.39/x
  3. Step 3: Cross multiply
    14,653.74x = 20,222.15 × 7,939.39
  4. Step 4: Simplify right side
    14,653.74x = 160,551,535.49
  5. Step 5: Solve for x
    x = 160,551,535.49/14,653.74
  6. Step 6: Final answer
    x = 10,956.35

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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.