Home / 20,302.40-30,455.76-6,448.16

Finding the Fourth Proportional to 20,302.40, 30,455.76 and 6,448.16

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Solution

The fourth proportional to 20,302.40, 30,455.76 and 6,448.16 is: 9,672.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.40 : 30,455.76 = 6,448.16 : x
  2. Step 2: Convert to fraction form
    20,302.40/30,455.76 = 6,448.16/x
  3. Step 3: Cross multiply
    20,302.40x = 30,455.76 × 6,448.16
  4. Step 4: Simplify right side
    20,302.40x = 196,383,613.40
  5. Step 5: Solve for x
    x = 196,383,613.40/20,302.40
  6. Step 6: Final answer
    x = 9,672.93

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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.