Home / 13,369.88-18,444.72-8,061.68

Finding the Fourth Proportional to 13,369.88, 18,444.72 and 8,061.68

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Solution

The fourth proportional to 13,369.88, 18,444.72 and 8,061.68 is: 11,121.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.88 : 18,444.72 = 8,061.68 : x
  2. Step 2: Convert to fraction form
    13,369.88/18,444.72 = 8,061.68/x
  3. Step 3: Cross multiply
    13,369.88x = 18,444.72 × 8,061.68
  4. Step 4: Simplify right side
    13,369.88x = 148,695,430.33
  5. Step 5: Solve for x
    x = 148,695,430.33/13,369.88
  6. Step 6: Final answer
    x = 11,121.67

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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.