Home / 13,665.12-18,844.88-12,646.88

Finding the Fourth Proportional to 13,665.12, 18,844.88 and 12,646.88

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Solution

The fourth proportional to 13,665.12, 18,844.88 and 12,646.88 is: 17,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.12 : 18,844.88 = 12,646.88 : x
  2. Step 2: Convert to fraction form
    13,665.12/18,844.88 = 12,646.88/x
  3. Step 3: Cross multiply
    13,665.12x = 18,844.88 × 12,646.88
  4. Step 4: Simplify right side
    13,665.12x = 238,328,935.97
  5. Step 5: Solve for x
    x = 238,328,935.97/13,665.12
  6. Step 6: Final answer
    x = 17,440.68

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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.