Home / 13,371.96-18,457.31-8,656.56

Finding the Fourth Proportional to 13,371.96, 18,457.31 and 8,656.56

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Solution

The fourth proportional to 13,371.96, 18,457.31 and 8,656.56 is: 11,948.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.96 : 18,457.31 = 8,656.56 : x
  2. Step 2: Convert to fraction form
    13,371.96/18,457.31 = 8,656.56/x
  3. Step 3: Cross multiply
    13,371.96x = 18,457.31 × 8,656.56
  4. Step 4: Simplify right side
    13,371.96x = 159,776,768.17
  5. Step 5: Solve for x
    x = 159,776,768.17/13,371.96
  6. Step 6: Final answer
    x = 11,948.64

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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.