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Finding the Fourth Proportional to 12,908.60, 19,325.10 and 9,636.20

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Solution

The fourth proportional to 12,908.60, 19,325.10 and 9,636.20 is: 14,426.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.60 : 19,325.10 = 9,636.20 : x
  2. Step 2: Convert to fraction form
    12,908.60/19,325.10 = 9,636.20/x
  3. Step 3: Cross multiply
    12,908.60x = 19,325.10 × 9,636.20
  4. Step 4: Simplify right side
    12,908.60x = 186,220,528.62
  5. Step 5: Solve for x
    x = 186,220,528.62/12,908.60
  6. Step 6: Final answer
    x = 14,426.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.