Home / 55,120.21-82,687.11-15,680.40

Finding the Fourth Proportional to 55,120.21, 82,687.11 and 15,680.40

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Solution

The fourth proportional to 55,120.21, 82,687.11 and 15,680.40 is: 23,522.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,120.21 : 82,687.11 = 15,680.40 : x
  2. Step 2: Convert to fraction form
    55,120.21/82,687.11 = 15,680.40/x
  3. Step 3: Cross multiply
    55,120.21x = 82,687.11 × 15,680.40
  4. Step 4: Simplify right side
    55,120.21x = 1,296,566,959.64
  5. Step 5: Solve for x
    x = 1,296,566,959.64/55,120.21
  6. Step 6: Final answer
    x = 23,522.53

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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.