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Finding the Fourth Proportional to 10,806, 14,910.64 and 6,090.20

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Solution

The fourth proportional to 10,806, 14,910.64 and 6,090.20 is: 8,403.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,806 : 14,910.64 = 6,090.20 : x
  2. Step 2: Convert to fraction form
    10,806/14,910.64 = 6,090.20/x
  3. Step 3: Cross multiply
    10,806x = 14,910.64 × 6,090.20
  4. Step 4: Simplify right side
    10,806x = 90,808,779.73
  5. Step 5: Solve for x
    x = 90,808,779.73/10,806
  6. Step 6: Final answer
    x = 8,403.55

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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.