Home / 12,405.39-18,608.09-4,806.51

Finding the Fourth Proportional to 12,405.39, 18,608.09 and 4,806.51

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Solution

The fourth proportional to 12,405.39, 18,608.09 and 4,806.51 is: 7,209.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.39 : 18,608.09 = 4,806.51 : x
  2. Step 2: Convert to fraction form
    12,405.39/18,608.09 = 4,806.51/x
  3. Step 3: Cross multiply
    12,405.39x = 18,608.09 × 4,806.51
  4. Step 4: Simplify right side
    12,405.39x = 89,439,946.63
  5. Step 5: Solve for x
    x = 89,439,946.63/12,405.39
  6. Step 6: Final answer
    x = 7,209.77

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Similar ratio
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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.