Home / 13,987.72-19,304.94-12,806.68

Finding the Fourth Proportional to 13,987.72, 19,304.94 and 12,806.68

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Solution

The fourth proportional to 13,987.72, 19,304.94 and 12,806.68 is: 17,674.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.72 : 19,304.94 = 12,806.68 : x
  2. Step 2: Convert to fraction form
    13,987.72/19,304.94 = 12,806.68/x
  3. Step 3: Cross multiply
    13,987.72x = 19,304.94 × 12,806.68
  4. Step 4: Simplify right side
    13,987.72x = 247,232,189.00
  5. Step 5: Solve for x
    x = 247,232,189.00/13,987.72
  6. Step 6: Final answer
    x = 17,674.95

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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.