Home / 12,289.92-16,941.60-9,309.12

Finding the Fourth Proportional to 12,289.92, 16,941.60 and 9,309.12

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Solution

The fourth proportional to 12,289.92, 16,941.60 and 9,309.12 is: 12,832.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.92 : 16,941.60 = 9,309.12 : x
  2. Step 2: Convert to fraction form
    12,289.92/16,941.60 = 9,309.12/x
  3. Step 3: Cross multiply
    12,289.92x = 16,941.60 × 9,309.12
  4. Step 4: Simplify right side
    12,289.92x = 157,711,387.39
  5. Step 5: Solve for x
    x = 157,711,387.39/12,289.92
  6. Step 6: Final answer
    x = 12,832.58

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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.