Home / 13,412.96-18,518.56-8,635.04

Finding the Fourth Proportional to 13,412.96, 18,518.56 and 8,635.04

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Solution

The fourth proportional to 13,412.96, 18,518.56 and 8,635.04 is: 11,921.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.96 : 18,518.56 = 8,635.04 : x
  2. Step 2: Convert to fraction form
    13,412.96/18,518.56 = 8,635.04/x
  3. Step 3: Cross multiply
    13,412.96x = 18,518.56 × 8,635.04
  4. Step 4: Simplify right side
    13,412.96x = 159,908,506.34
  5. Step 5: Solve for x
    x = 159,908,506.34/13,412.96
  6. Step 6: Final answer
    x = 11,921.94

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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.