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Finding the Fourth Proportional to 14,393.79, 19,863.38 and 8,020.65

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Solution

The fourth proportional to 14,393.79, 19,863.38 and 8,020.65 is: 11,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,393.79 : 19,863.38 = 8,020.65 : x
  2. Step 2: Convert to fraction form
    14,393.79/19,863.38 = 8,020.65/x
  3. Step 3: Cross multiply
    14,393.79x = 19,863.38 × 8,020.65
  4. Step 4: Simplify right side
    14,393.79x = 159,317,313.34
  5. Step 5: Solve for x
    x = 159,317,313.34/14,393.79
  6. Step 6: Final answer
    x = 11,068.48

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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.