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Finding the Fourth Proportional to 13,802.79, 20,653.16 and 8,259.96

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Solution

The fourth proportional to 13,802.79, 20,653.16 and 8,259.96 is: 12,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,802.79 : 20,653.16 = 8,259.96 : x
  2. Step 2: Convert to fraction form
    13,802.79/20,653.16 = 8,259.96/x
  3. Step 3: Cross multiply
    13,802.79x = 20,653.16 × 8,259.96
  4. Step 4: Simplify right side
    13,802.79x = 170,594,234.17
  5. Step 5: Solve for x
    x = 170,594,234.17/13,802.79
  6. Step 6: Final answer
    x = 12,359.40

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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.