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Finding the Fourth Proportional to 14,394.79, 19,864.76 and 8,021.65

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Solution

The fourth proportional to 14,394.79, 19,864.76 and 8,021.65 is: 11,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,394.79 : 19,864.76 = 8,021.65 : x
  2. Step 2: Convert to fraction form
    14,394.79/19,864.76 = 8,021.65/x
  3. Step 3: Cross multiply
    14,394.79x = 19,864.76 × 8,021.65
  4. Step 4: Simplify right side
    14,394.79x = 159,348,152.05
  5. Step 5: Solve for x
    x = 159,348,152.05/14,394.79
  6. Step 6: Final answer
    x = 11,069.85

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Double scale
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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.