Home / 13,342.18-18,406.44-9,365.86

Finding the Fourth Proportional to 13,342.18, 18,406.44 and 9,365.86

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Solution

The fourth proportional to 13,342.18, 18,406.44 and 9,365.86 is: 12,920.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.18 : 18,406.44 = 9,365.86 : x
  2. Step 2: Convert to fraction form
    13,342.18/18,406.44 = 9,365.86/x
  3. Step 3: Cross multiply
    13,342.18x = 18,406.44 × 9,365.86
  4. Step 4: Simplify right side
    13,342.18x = 172,392,140.14
  5. Step 5: Solve for x
    x = 172,392,140.14/13,342.18
  6. Step 6: Final answer
    x = 12,920.84

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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.