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Finding the Fourth Proportional to 15,474.79, 21,353.45 and 8,669.08

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Solution

The fourth proportional to 15,474.79, 21,353.45 and 8,669.08 is: 11,962.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.79 : 21,353.45 = 8,669.08 : x
  2. Step 2: Convert to fraction form
    15,474.79/21,353.45 = 8,669.08/x
  3. Step 3: Cross multiply
    15,474.79x = 21,353.45 × 8,669.08
  4. Step 4: Simplify right side
    15,474.79x = 185,114,766.33
  5. Step 5: Solve for x
    x = 185,114,766.33/15,474.79
  6. Step 6: Final answer
    x = 11,962.34

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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.