Home / 20,576.32-28,395.84-12,622.94

Finding the Fourth Proportional to 20,576.32, 28,395.84 and 12,622.94

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Solution

The fourth proportional to 20,576.32, 28,395.84 and 12,622.94 is: 17,419.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,576.32 : 28,395.84 = 12,622.94 : x
  2. Step 2: Convert to fraction form
    20,576.32/28,395.84 = 12,622.94/x
  3. Step 3: Cross multiply
    20,576.32x = 28,395.84 × 12,622.94
  4. Step 4: Simplify right side
    20,576.32x = 358,438,984.57
  5. Step 5: Solve for x
    x = 358,438,984.57/20,576.32
  6. Step 6: Final answer
    x = 17,419.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.