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Finding the Fourth Proportional to 12,107.60, 16,709.86 and 7,073.45

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Solution

The fourth proportional to 12,107.60, 16,709.86 and 7,073.45 is: 9,762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.60 : 16,709.86 = 7,073.45 : x
  2. Step 2: Convert to fraction form
    12,107.60/16,709.86 = 7,073.45/x
  3. Step 3: Cross multiply
    12,107.60x = 16,709.86 × 7,073.45
  4. Step 4: Simplify right side
    12,107.60x = 118,196,359.22
  5. Step 5: Solve for x
    x = 118,196,359.22/12,107.60
  6. Step 6: Final answer
    x = 9,762.16

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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.