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Finding the Fourth Proportional to 14,808.70, 20,421.87 and 9,696.59

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Solution

The fourth proportional to 14,808.70, 20,421.87 and 9,696.59 is: 13,372.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,808.70 : 20,421.87 = 9,696.59 : x
  2. Step 2: Convert to fraction form
    14,808.70/20,421.87 = 9,696.59/x
  3. Step 3: Cross multiply
    14,808.70x = 20,421.87 × 9,696.59
  4. Step 4: Simplify right side
    14,808.70x = 198,022,500.42
  5. Step 5: Solve for x
    x = 198,022,500.42/14,808.70
  6. Step 6: Final answer
    x = 13,372.04

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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.