Home / 13,319.37-19,981.22-6,742.89

Finding the Fourth Proportional to 13,319.37, 19,981.22 and 6,742.89

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Solution

The fourth proportional to 13,319.37, 19,981.22 and 6,742.89 is: 10,115.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.37 : 19,981.22 = 6,742.89 : x
  2. Step 2: Convert to fraction form
    13,319.37/19,981.22 = 6,742.89/x
  3. Step 3: Cross multiply
    13,319.37x = 19,981.22 × 6,742.89
  4. Step 4: Simplify right side
    13,319.37x = 134,731,134.81
  5. Step 5: Solve for x
    x = 134,731,134.81/13,319.37
  6. Step 6: Final answer
    x = 10,115.43

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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.