Home / 13,954.02-20,889.45-13,455.81

Finding the Fourth Proportional to 13,954.02, 20,889.45 and 13,455.81

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Solution

The fourth proportional to 13,954.02, 20,889.45 and 13,455.81 is: 20,143.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.02 : 20,889.45 = 13,455.81 : x
  2. Step 2: Convert to fraction form
    13,954.02/20,889.45 = 13,455.81/x
  3. Step 3: Cross multiply
    13,954.02x = 20,889.45 × 13,455.81
  4. Step 4: Simplify right side
    13,954.02x = 281,084,470.20
  5. Step 5: Solve for x
    x = 281,084,470.20/13,954.02
  6. Step 6: Final answer
    x = 20,143.62

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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.