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Finding the Fourth Proportional to 12,465.45, 17,208.68 and 9,626.45

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Solution

The fourth proportional to 12,465.45, 17,208.68 and 9,626.45 is: 13,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,465.45 : 17,208.68 = 9,626.45 : x
  2. Step 2: Convert to fraction form
    12,465.45/17,208.68 = 9,626.45/x
  3. Step 3: Cross multiply
    12,465.45x = 17,208.68 × 9,626.45
  4. Step 4: Simplify right side
    12,465.45x = 165,658,492.48
  5. Step 5: Solve for x
    x = 165,658,492.48/12,465.45
  6. Step 6: Final answer
    x = 13,289.41

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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.