Home / 20,455.13-30,672.88-7,304.38

Finding the Fourth Proportional to 20,455.13, 30,672.88 and 7,304.38

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Solution

The fourth proportional to 20,455.13, 30,672.88 and 7,304.38 is: 10,953.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.13 : 30,672.88 = 7,304.38 : x
  2. Step 2: Convert to fraction form
    20,455.13/30,672.88 = 7,304.38/x
  3. Step 3: Cross multiply
    20,455.13x = 30,672.88 × 7,304.38
  4. Step 4: Simplify right side
    20,455.13x = 224,046,276.27
  5. Step 5: Solve for x
    x = 224,046,276.27/20,455.13
  6. Step 6: Final answer
    x = 10,953.06

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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.