Home / 13,341.70-20,015.79-3,981.64

Finding the Fourth Proportional to 13,341.70, 20,015.79 and 3,981.64

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Solution

The fourth proportional to 13,341.70, 20,015.79 and 3,981.64 is: 5,973.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,341.70 : 20,015.79 = 3,981.64 : x
  2. Step 2: Convert to fraction form
    13,341.70/20,015.79 = 3,981.64/x
  3. Step 3: Cross multiply
    13,341.70x = 20,015.79 × 3,981.64
  4. Step 4: Simplify right side
    13,341.70x = 79,695,670.10
  5. Step 5: Solve for x
    x = 79,695,670.10/13,341.70
  6. Step 6: Final answer
    x = 5,973.43

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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.