Home / 13,886.70-19,160.60-8,218.62

Finding the Fourth Proportional to 13,886.70, 19,160.60 and 8,218.62

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Solution

The fourth proportional to 13,886.70, 19,160.60 and 8,218.62 is: 11,339.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886.70 : 19,160.60 = 8,218.62 : x
  2. Step 2: Convert to fraction form
    13,886.70/19,160.60 = 8,218.62/x
  3. Step 3: Cross multiply
    13,886.70x = 19,160.60 × 8,218.62
  4. Step 4: Simplify right side
    13,886.70x = 157,473,649.28
  5. Step 5: Solve for x
    x = 157,473,649.28/13,886.70
  6. Step 6: Final answer
    x = 11,339.89

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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.