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Finding the Fourth Proportional to 15,177.30, 20,941.02 and 9,208.80

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Solution

The fourth proportional to 15,177.30, 20,941.02 and 9,208.80 is: 12,705.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,177.30 : 20,941.02 = 9,208.80 : x
  2. Step 2: Convert to fraction form
    15,177.30/20,941.02 = 9,208.80/x
  3. Step 3: Cross multiply
    15,177.30x = 20,941.02 × 9,208.80
  4. Step 4: Simplify right side
    15,177.30x = 192,841,664.98
  5. Step 5: Solve for x
    x = 192,841,664.98/15,177.30
  6. Step 6: Final answer
    x = 12,705.93

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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.