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Finding the Fourth Proportional to 12,309.90, 17,277.60 and 12,309.90

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Solution

The fourth proportional to 12,309.90, 17,277.60 and 12,309.90 is: 17,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,309.90 : 17,277.60 = 12,309.90 : x
  2. Step 2: Convert to fraction form
    12,309.90/17,277.60 = 12,309.90/x
  3. Step 3: Cross multiply
    12,309.90x = 17,277.60 × 12,309.90
  4. Step 4: Simplify right side
    12,309.90x = 212,685,528.24
  5. Step 5: Solve for x
    x = 212,685,528.24/12,309.90
  6. Step 6: Final answer
    x = 17,277.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.