Home / 12,431.84-17,121.12-10,316.48

Finding the Fourth Proportional to 12,431.84, 17,121.12 and 10,316.48

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Solution

The fourth proportional to 12,431.84, 17,121.12 and 10,316.48 is: 14,207.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.84 : 17,121.12 = 10,316.48 : x
  2. Step 2: Convert to fraction form
    12,431.84/17,121.12 = 10,316.48/x
  3. Step 3: Cross multiply
    12,431.84x = 17,121.12 × 10,316.48
  4. Step 4: Simplify right side
    12,431.84x = 176,629,692.06
  5. Step 5: Solve for x
    x = 176,629,692.06/12,431.84
  6. Step 6: Final answer
    x = 14,207.85

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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.