Home / 13,979.17-19,291.89-8,675.70

Finding the Fourth Proportional to 13,979.17, 19,291.89 and 8,675.70

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Solution

The fourth proportional to 13,979.17, 19,291.89 and 8,675.70 is: 11,972.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.17 : 19,291.89 = 8,675.70 : x
  2. Step 2: Convert to fraction form
    13,979.17/19,291.89 = 8,675.70/x
  3. Step 3: Cross multiply
    13,979.17x = 19,291.89 × 8,675.70
  4. Step 4: Simplify right side
    13,979.17x = 167,370,650.07
  5. Step 5: Solve for x
    x = 167,370,650.07/13,979.17
  6. Step 6: Final answer
    x = 11,972.86

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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.