Home / 12,461.12-17,218.20-9,963.84

Finding the Fourth Proportional to 12,461.12, 17,218.20 and 9,963.84

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Solution

The fourth proportional to 12,461.12, 17,218.20 and 9,963.84 is: 13,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.12 : 17,218.20 = 9,963.84 : x
  2. Step 2: Convert to fraction form
    12,461.12/17,218.20 = 9,963.84/x
  3. Step 3: Cross multiply
    12,461.12x = 17,218.20 × 9,963.84
  4. Step 4: Simplify right side
    12,461.12x = 171,559,389.89
  5. Step 5: Solve for x
    x = 171,559,389.89/12,461.12
  6. Step 6: Final answer
    x = 13,767.57

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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.