Home / 20,260.64-30,396.54-7,111.28

Finding the Fourth Proportional to 20,260.64, 30,396.54 and 7,111.28

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Solution

The fourth proportional to 20,260.64, 30,396.54 and 7,111.28 is: 10,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.64 : 30,396.54 = 7,111.28 : x
  2. Step 2: Convert to fraction form
    20,260.64/30,396.54 = 7,111.28/x
  3. Step 3: Cross multiply
    20,260.64x = 30,396.54 × 7,111.28
  4. Step 4: Simplify right side
    20,260.64x = 216,158,306.97
  5. Step 5: Solve for x
    x = 216,158,306.97/20,260.64
  6. Step 6: Final answer
    x = 10,668.88

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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.