Home / 13,814.89-20,721.83-3,954.15

Finding the Fourth Proportional to 13,814.89, 20,721.83 and 3,954.15

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Solution

The fourth proportional to 13,814.89, 20,721.83 and 3,954.15 is: 5,931.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,814.89 : 20,721.83 = 3,954.15 : x
  2. Step 2: Convert to fraction form
    13,814.89/20,721.83 = 3,954.15/x
  3. Step 3: Cross multiply
    13,814.89x = 20,721.83 × 3,954.15
  4. Step 4: Simplify right side
    13,814.89x = 81,937,204.32
  5. Step 5: Solve for x
    x = 81,937,204.32/13,814.89
  6. Step 6: Final answer
    x = 5,931.08

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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.