Home / 12,436.77-17,163.95-9,287.49

Finding the Fourth Proportional to 12,436.77, 17,163.95 and 9,287.49

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Solution

The fourth proportional to 12,436.77, 17,163.95 and 9,287.49 is: 12,817.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.77 : 17,163.95 = 9,287.49 : x
  2. Step 2: Convert to fraction form
    12,436.77/17,163.95 = 9,287.49/x
  3. Step 3: Cross multiply
    12,436.77x = 17,163.95 × 9,287.49
  4. Step 4: Simplify right side
    12,436.77x = 159,409,971.08
  5. Step 5: Solve for x
    x = 159,409,971.08/12,436.77
  6. Step 6: Final answer
    x = 12,817.64

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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.