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Finding the Fourth Proportional to 14,705.84, 20,289.96 and 8,417.84

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Solution

The fourth proportional to 14,705.84, 20,289.96 and 8,417.84 is: 11,614.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,705.84 : 20,289.96 = 8,417.84 : x
  2. Step 2: Convert to fraction form
    14,705.84/20,289.96 = 8,417.84/x
  3. Step 3: Cross multiply
    14,705.84x = 20,289.96 × 8,417.84
  4. Step 4: Simplify right side
    14,705.84x = 170,797,636.89
  5. Step 5: Solve for x
    x = 170,797,636.89/14,705.84
  6. Step 6: Final answer
    x = 11,614.27

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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.