Home / 13,609.46-18,779.64-8,305.58

Finding the Fourth Proportional to 13,609.46, 18,779.64 and 8,305.58

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Solution

The fourth proportional to 13,609.46, 18,779.64 and 8,305.58 is: 11,460.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.46 : 18,779.64 = 8,305.58 : x
  2. Step 2: Convert to fraction form
    13,609.46/18,779.64 = 8,305.58/x
  3. Step 3: Cross multiply
    13,609.46x = 18,779.64 × 8,305.58
  4. Step 4: Simplify right side
    13,609.46x = 155,975,802.39
  5. Step 5: Solve for x
    x = 155,975,802.39/13,609.46
  6. Step 6: Final answer
    x = 11,460.84

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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.