Home / 13,407.20-18,501.94-7,438.92

Finding the Fourth Proportional to 13,407.20, 18,501.94 and 7,438.92

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Solution

The fourth proportional to 13,407.20, 18,501.94 and 7,438.92 is: 10,265.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.20 : 18,501.94 = 7,438.92 : x
  2. Step 2: Convert to fraction form
    13,407.20/18,501.94 = 7,438.92/x
  3. Step 3: Cross multiply
    13,407.20x = 18,501.94 × 7,438.92
  4. Step 4: Simplify right side
    13,407.20x = 137,634,451.50
  5. Step 5: Solve for x
    x = 137,634,451.50/13,407.20
  6. Step 6: Final answer
    x = 10,265.71

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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.