Home / 13,565.72-20,346.96-3,705.86

Finding the Fourth Proportional to 13,565.72, 20,346.96 and 3,705.86

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Solution

The fourth proportional to 13,565.72, 20,346.96 and 3,705.86 is: 5,558.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.72 : 20,346.96 = 3,705.86 : x
  2. Step 2: Convert to fraction form
    13,565.72/20,346.96 = 3,705.86/x
  3. Step 3: Cross multiply
    13,565.72x = 20,346.96 × 3,705.86
  4. Step 4: Simplify right side
    13,565.72x = 75,402,985.19
  5. Step 5: Solve for x
    x = 75,402,985.19/13,565.72
  6. Step 6: Final answer
    x = 5,558.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.