Home / 13,396.86-20,062.47-9,438.39

Finding the Fourth Proportional to 13,396.86, 20,062.47 and 9,438.39

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Solution

The fourth proportional to 13,396.86, 20,062.47 and 9,438.39 is: 14,134.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.86 : 20,062.47 = 9,438.39 : x
  2. Step 2: Convert to fraction form
    13,396.86/20,062.47 = 9,438.39/x
  3. Step 3: Cross multiply
    13,396.86x = 20,062.47 × 9,438.39
  4. Step 4: Simplify right side
    13,396.86x = 189,357,416.22
  5. Step 5: Solve for x
    x = 189,357,416.22/13,396.86
  6. Step 6: Final answer
    x = 14,134.46

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1.5x scale

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.