Home / 12,939.12-17,848.98-10,687.68

Finding the Fourth Proportional to 12,939.12, 17,848.98 and 10,687.68

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Solution

The fourth proportional to 12,939.12, 17,848.98 and 10,687.68 is: 14,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.12 : 17,848.98 = 10,687.68 : x
  2. Step 2: Convert to fraction form
    12,939.12/17,848.98 = 10,687.68/x
  3. Step 3: Cross multiply
    12,939.12x = 17,848.98 × 10,687.68
  4. Step 4: Simplify right side
    12,939.12x = 190,764,186.57
  5. Step 5: Solve for x
    x = 190,764,186.57/12,939.12
  6. Step 6: Final answer
    x = 14,743.21

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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.