Home / 13,371.71-18,456.96-8,656.31

Finding the Fourth Proportional to 13,371.71, 18,456.96 and 8,656.31

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Solution

The fourth proportional to 13,371.71, 18,456.96 and 8,656.31 is: 11,948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.71 : 18,456.96 = 8,656.31 : x
  2. Step 2: Convert to fraction form
    13,371.71/18,456.96 = 8,656.31/x
  3. Step 3: Cross multiply
    13,371.71x = 18,456.96 × 8,656.31
  4. Step 4: Simplify right side
    13,371.71x = 159,769,167.42
  5. Step 5: Solve for x
    x = 159,769,167.42/13,371.71
  6. Step 6: Final answer
    x = 11,948.30

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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.